DIRECTIONS : In this type of questions, certain numbers are given, out of which all except one are alike in some manner while one is different and this number is to be chosen as the answer.
| 6. | Choose the number which is different from others in the group. | ||
|---|---|---|---|
| A. 7 C. 31 | B. 15 D. 57 | ||
| Ans : D. All other numbers can be expressed as a power of 2 minus one. | |||
| 7. | Choose the number which is different from others in the group. | ||
|---|---|---|---|
| A. 2 C. 56 | B. 16 D. 128 | ||
| Ans : C.Each of the numbers except 56, can be expressed in terms of powers of 2. | |||
| 8. | Choose the number which is different from others in the group. | ||
|---|---|---|---|
| A. 21 | B. 39 | ||
| C. 63 Ans : D. 83 is the only prime number in the group. | D. 83 | ||
| 9. | Choose the number which is different from others in the group. | ||
|---|---|---|---|
| A. 6 C. 7 | B. 12 D. 9 | ||
| Ans : C. is the only prime number in the group. | |||
| 10. | Choose the number which is different from others in the group. | ||
|---|---|---|---|
| A. 325 C. 178 | B. 236 D. 639 | ||
| Ans: B. In all other number, the last digit digit is the sum of the first two. | |||
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