What does the acronym ERS stand for in the context of the National Highways Authority of India's (NHAI) innovative mobile application unveiling?

Find the missing term in the following question:

Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.

Find the missing number from the given responses.

3       5       7

4       6       8

5       7       9

Select the option that is related to the third number in the same way as the second number is related to the first number.

15 : 5 :: 26 : ?

Find the missing number in the givens series.

99, 143, (?) , 255, 288

Select the number that can replace the question mark (?) in the following series.

26, 39, 53, 68, 84, ?

Find the missing term in the given series:

Find the missing number. 

Select the number that will replace the question mark (?) in the following series.

35, 38, 43, 50, 61, 74, ?