Challenger Logo

Challenger App

Get it on Google PlayGet it on App Store
Challenger App

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
Get App
Some boys are standing in a queue. If the tenth boy from behind is 5 behind the 12th boy from the front, how many are there in the queue ?

A26

B17

C20

D27

Answer:

A. 26

Read Explanation:

There are 26 boys in the queue.

  1. Find the position of the 12th boy from the front:

    • His position is 12.

  2. Find the position of the other boy from the front:

    • He is 5 positions behind the 12th boy.

    • Position from the front = 12+5=1712 + 5 = \mathbf{17}.

  3. Calculate the total number of boys:

    • This same boy is 10th from the back.

    • Total boys = (Position from front) + (Position from back) - 1

    • Total boys = 17+10−1=2617 + 10 - 1 = \mathbf{26}.

Related Questions:

E, F, G, H, I, J, and K are sitting in a straight row, facing north. H is second to the right of G. F and K are immediate neighbors. Both F and E are immediate neighbors of J. H and E are immediate neighbors. K is at the extreme right end of the row. I is at the immediate left of H. Who is at the immediate left of I?
Seven people, A, B, C, D, E, F and G are sitting in a row, facing north. Only two people sit to the right of D. Only two people sit between D and E. Only two people sit between G and B. B sits to the immediate left of D. C sits to the immediate right of F. How many people sit between A and D?
Eight people are sitting in two parallel rows containing 4 people each, in such a way that there is equal distance between adjacent persons. In row 1 - I,N,K ans S are seated and all of them are facing south. In row 2 - P, A,R and T are seated and all of them are facing north. Thus each person faces another person from the other row. R sits to the immediate right of A. Only 2 people sit between K and S . A faces K. The one who faces N, sits to the immediate left of P. T does not sit at any of the extreme ends. Which of the following options represents both people facing each other ?
A, B, C, D, E and F live on six different floors of the same building. The lowermost floor in the building is numbered 1. the floor above it is numbered 2, and so on till the topmost floor is numbered 6. E lives on the floor immediately below F's floor. D lives on the 2nd floor. C lives on the floor immediately below A's floor. F does not live on the 5th floor. On which floor does B live?
G, H, I, J, K and L live on six different floors of the same building. The lowermost floor in the building is numbered 6, the floor above it is numbered 5, and so on till the topmost floor is numbered 1. J lives on an even numbered floor. G and K. each live on an odd numbered floor. I lives on floor number 2. H lives on an odd numbered floor, immediately above L and immediately below I. G does not live on the topmost floor. Who lives on the lowermost floor?