Choose analogous pair - Graphite : Lubricant

D. DIAMOND : ABRASIVE

If (x3 + 1/x3) = 52, the value of (x + 1/x) is :

A. 4

Choose or find odd letter group - RTW , QOM , IKG , IKM , BDF

A. RTW

Choose or find odd word - Jumping , Running , Sprinting , Jogging , Exercising

E. EXERCISING

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 5, 9, 16, 25, 37, 49

B. 15