9 13 21 37 69 ? 261

6 7 9 13 26 37 69

Find the nth term and the sum of n terms of the series : 6 +9 +21 + 69 + 261 + ....

9, 13, 21, 37, 61, 133

209 - 21 - 69 =

209 - 21 - 69 =

In each of the following questions, find the missing number /letters/figure from the given responses : 7, 9, 13, 21, 37, ?

The following question, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 7, 9, 13, 21, 37, ?

Use the commutative and associative property to simplify the following 431 + 37 + 69 + 63

Find the missing term in the following series 42 105 90 144 72 333 481 78 342 ? 6 13 37 9 8 18 5 21 2

1 2 4 9 23 69 186