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Series Completion

Important Instructions
Direction for [ Question No: 1 To 5 ] :

In each of the following questions, one term in the number series is wrong. Find the wrong term

1.

10, 26, 74, 218, 654, 1946, 5834

Answer: D

No answer description available for this question.

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2.

3, 7, 15, 39, 63, 127, 255, 511

Answer: A

No answer description available for this question.

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3.

56, 72, 90, 110, 132, 150

Answer: E

No answer description available for this question.

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4.

1, 2, 6, 15, 31, 56, 91

Answer: D

No answer description available for this question.

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5.

125, 126, 124, 127, 123, 129

Answer: E

No answer description available for this question.

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Direction for [ Question No: 6 To 10 ] :

In each of the following questions, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern.

6.

1, 4, 9, 16, 25, ?

Answer: B

The numbers are \({1^2} , {2^2}, {3^2} , {4^2} , {5^2} \)
So the missing number is \({6^2} = 36.\)

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7.

6, 11, 21, 36, 56, ?

Answer: C

The pattern is + 5, + 10, + 15, + 20, ...
So, missing term = 56 + 25 = 81.

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8.

1, 4, 10, 22, 46, ?

Answer: C

Explanation:

The pattern is + 3, + 6, + 12, + 24,.....

So, missing term = 46 + 48 = 94.

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9.

28, 33, 31, 36, ?, 39

Answer: B

Explanation:

The pattern is + 5, - 2, + 5, - 2,.....

So, missing term = 36 - 2 = 34.

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10.

1, 6, 13, 22, 33, ?

Answer: D

The pattern is \(+5, +7, +9, +11,..\)

So the missing number \(= 33+13=46\).

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