If A + B = 2C and C + D = 2A, then

Mental Ability - Questions

A + C = 2B

A + C = 2D

A + C = B + D

A + D = B + C

Correct Answer : Option (C) - A + C = B + D

Explanation :

A + B = 2C ----(i)

C + D = 2A ----(ii)

Adding (i) and (ii) we get : A + B + C + D = 2C + 2A

=> B + D = A + C

Recently Updated in Mental Ability Questions

Q .

In the following question :

Various terms of an alphanumerical series are given with one or more terms missing as shown by (?).

Choose the missing terms out of the given alternatives. BMO, EOQ, HQS, ?

SOV

LMN

KSU

SOW

Correct Answer : KSU

Explanation : The first letter moves 3 steps forward. The second and third letters move 2 steps forward.

Q .

What should come in place of the question mark (?) in the following number series? 8, 6, 9, 23, ?

Correct Answer : 87

Explanation :

Given number 8, 6, 9, 23, ?

The pattern of given series is :

8 x 1 - 2 = 6 6 x 2 - 3 = 9 9 x3 - 4 = 23 23 x4 - 5 = 87