What is the primary threat to Gangetic river  dolphins

Select the option that will replace the question mark (?) in the figure given below to complete the pattern.

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

DF, GJ, KM, NQ, RT, ?

After interchanging the first and last digits in each of the following numbers, identify the correct sequence of number in the ascending order.

Select the set in which the numbers are related in the same way as are the numbers of the given sets.

(213, 157), (185, 129)

By interchanging the given two numbers (not digits), which of the following equations will be correct?

44 and 19

What is opposite to 'V' when the given figure is folded to form a cube?

Which of the following numbers will replace the question mark (?) in the given series?

Select the figure which is NOT embedded in the given figure (rotation is NOT allowed).