Challenger App

No.1 PSC Learning App

1M+ Downloads
If 5 @ 1 = 26,3 @ 4 = 13, then 6 @ 2 = ?

A36

B38

C40

D42

Answer:

B. 38

Read Explanation:

Let's find the pattern:

Given:

  • (5 @ 1 = 26)

  • (3 @ 4 = 13)

Notice:

52+1=25+1=265^2 + 1 = 25 + 1 = 26
32+4=9+4=133^2 + 4 = 9 + 4 = 13

So the operation appears to be:

a@b=a2+ba @ b = a^2 + b

Now apply it:

6@2=62+2=36+2=386 @ 2 = 6^2 + 2 = 36 + 2 = 38

Answer: 38


Related Questions:

A sector of a circle with radius 8 cm has a central angle of 45°. What is the area of the corresponding segment?
If the radius of the base of a right circular cylinder is decreased by 27% and its height is increased by 237%, then what is the percentage increase (closest integer) in its volume?
Surface area of a solid sphere is 4 square centimeters. If it is cut into two hemispheres, what would be the surface area of each hemisphere ?
A cylinder of radius 6 centimetres and height 18 centimetres is melted and recast into spheres of radius 3 centimetres. The number of spheres made from the cylinder is:
Two triangles are similar with sides in the ratio 3:5. What is the ratio of their areas?