Reasoning - Complete the Series

Complete the series

Level - I

1. 1, 8, 27, 64, __ ?
2. 9, 28, 65, 126, __ ?
3. 2, 8, 18, 32, ___ ?
4. 2, 1, 1/2, 1/4, ___ ?
5. 2, -1, 1/2, -1/4, ___ ?
6. 1, 2, 3, 5, 8, 13, ___ ?
7. 1, 3, 7, 15, 31, ___ ?
8. 2, 3, 4, 6, 8, 12, 16, ___ ?
9. 2, 6, 10, 14, 18, 22, ___ ?
10. 2, -4, 8, -16, 32, ___ ?

Answers to Level – I [ Complete the Series ]

1. 125 cubes of natural number
2. 217 cubes of natural number + 1
3. 50 twice the square of natural number
4. 1/8 decrease by a factor of 2
5. 1/8 decrease by a factor of -2
6. 21 Add previous two numbers
7. 63 Multiply by 2 and add 1
8. 24 Multiply second last by 2 in sequence
9. 26 Multiply natural odd number by two in sequence
10. -64 Multiplying sequence by -2