In which year was India declared Open Defecation Free

78, 80, 84, ?, 108, 140

What will come in place of the question mark (?) in the following series?

102, 111, 136, 185, 266, ?

38% of 18/225 of 31/19 of 15225 =?

What will come in place of the question mark (?) in the following series?

60, 94, 184, 464, 1388, ?

What will come in place of the question mark (?) in the following series?

4, 3, 7, 26, 101, ?

What will come in place of the question mark (?) in the following series?

32, ?, 30, 46, 28, 44

126 56 ? 12 10 2

76, 80, 89, 105, ?, 166

Find the missing number in the given number series.

2, 5, 11, 23, 47, ?

8, 12, 16, 22, ?, 64