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If the time period of a sound wave is 0.02 s, then what is its frequency?
Which of the following countries was the host of Men's Hockey World Cup 2018?
Find the missing number in the following series. 864, 432, 440, 220, (…), 114
A train runs at a speed of 111 kmph to cover a distance of 222 km and then at a speed of 86 kmph to cover a distance of 258 km. Find the average speed of the train for the entire distance.
A vendor claims to sell wheat at a loss of 25%. But he cheats by using weights that weigh 55% less than what is mentioned on them. What is his profit percentage (rounded off to 2 decimal places)?

Simplify the following:

[(0.4)+(4.6)2+(2.3)2÷5]3.24[{(-0.4)+(4.6)^2+(2.3)^2}\div5]-3.24

For a positive integer b > 1, if the product of two numbers 6344 and 42b8 is divisible by 12, then find the least value of b.
A shopkeeper sells an item for ₹940.8 after giving two successive discounts of 84% and 44% on its marked price. Had he not given any discount, he would have earned a profit of 25%. What is the cost price (in ₹) of the item?
The price of fuel decreases by 60%, 30% and 20% in three successive months, but increases by 60% in the fourth month. What is the percentage increase/decrease in the price of fuel in the fourth month as compared to its original price?

Study the given table and answer the question that follows. The table shows the monthly expenditure (in ₹) of five people on education, rent, food, conveyance and electricity.

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Find the difference between the average amount spent on education and the average amount spent on conveyance.

Given that 870.27=x87^{0.27} = x, 870.15=y87^{0.15}= y and xz=y6x^z = y^6 , then the value of z is close to:

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A train runs at a speed of 84 kmph to cover a distance of 336 km and then at a speed of 96 kmph to cover a distance of 192 km. Find the average speed of the train for the entire distance.
400 chickooes were bought at ₹1410 per hundred and were sold at a profit of ₹860. Find the selling price (in ₹) per dozen of chickooes.
The average of eight numbers is 20. The average of five of these numbers is 15. The average of the remaining three numbers is
Lalit's average earning per month in the first three months of a year was ₹4080. In April, his earning was 75% more than the average earning in the first three months. If his average earning per month for the whole year is ₹66405, then what will be Lalit's average earning (in ₹) per month from May to December?
Ishita and Isha invest in a business in the ratio 31 : 23. If total profit is Rs. 2646, then what is difference between the profit (in Rs.) of Ishita and Isha?

Find the value of

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At what rate per cent per annum will a certain sum of money multiply itself by 55 times in 2 years, the interest being compounded annually? [Give your answer correct to 1 decimal place.]
A water tank is in the form of a right circular cone with radius 3 m and height 14 m. The tank is filled with water at the rate of one cubic metre per second. Find the time taken, in minutes, to fill the tank.
The average of eight numbers is 20. The average of five of these numbers is 20. The average of the remaining three numbers is
Anmol completes his journey in 10 hours. He covers half the distance at 46 km/h and the rest at 69 km/h. What is the length of the journey (in Km)?
The average weight of 8 men is decreased by 3 kg when one of them whose weight is 56 kg is replaced by a new man. What is the weight of the new man?
Find the circumference (in m) of the largest circle that can be inscribed in a rectangle whose dimensions are given as 21 m and 115 m. take π=22/7
The smallest 1-digit number to be added to the 6-digit number 405437 so that it is completely divisible by 11 is:

Which of the following fractions is the largest?

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Manish's average earning per month in the first three months of a year was ₹8784. In April, his earning was 25% more than the average earning in the first three months. If his average earning per month for the whole year is ₹99085, then what will be Manish's average earning (in ₹) per month from May to December?
Komal invested a sum of ₹5000 at 20% per annum compound interest, componded annually. If she received an amount of ₹7200 after n years, the value of n is:
Find the area of polygon ABCDE (in square cm) if AE = 20 cm and AB = 15 cm; quadrilateral BCDE is a square.
A sum, when invested at 20% simple interest per annum, amounts to ₹2160 after 3 years. What is the simple interest (in ₹) on the same sum at the same rate in 2 year?
Mansi and Neha together invested ₹40400 in a business. At the end of the year, out of a total profit of ₹5000, Mansi's share was ₹1900. What was the investment of Neha?
A person covers certain distance in 2 hours at a speed of 10 km/h and some more distance in 4 hours at a speed of 6 km/h. Find his average speed for the entire distance covered.
During sale, Raghav bought a notebook marked for ₹44 at 25% discount and a pen marked for ₹15 at 80% discount. How much (in ₹) did he save due to sale?
Which of the following ratio is smallest?

Express the following as a vulgar fraction.

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The population of a village was 130000. It increased by 10% in the first year and increased by 25% in the second year. Its population after two years is _______.
The resistivity of a material is dependent on which of the following factor?

Arrange the following metals in the decreasing order of reactivity?

K, Na, Zn, Cu, Hg, Ag

Amit's Son was born on 10 January 2012. On what day of the week was he born?
Identify the personality from amoung the following who received the Padma Shri 2022 award in the sports field?
Which of the following has the maximum non-metallic characters in group 16 elements?
Panchayat Raj Institutions in India have been established following the __________ of the Constitution of India.
which of the following substances are selectively reabsorbed from the initial filtrate by the tubular portion of the nephron in human kidney?
Which of the following rules is used to determine the direction of induced current due to the motion of coil at right angle of the magnetic field?
In a certain code languages , PRECIOUS is written as KIVXRLFH and CLEAR is written as XOVZI. How will DIRTYING be written in the same language?

If2x×412×83=16112^x\times{4^{12}}\times{8^3}=16^{11}, then find the value of x is:

As atomic number increases and nuclear charge increases, the force of attraction between nucleus and valence electrons increases, hence atomic radii decreases from Li to F?
_____ is the nodal agency for releasing data related to national income, consumption expenditure, savings, and capital formation since 1956?