Series Completion - Study Mode

[#206] One term in the number series is wrong. Find out the wrong term. 380, 188, 92, 48, 20, 8, 2
Correct Answer

(C) 48

Explanation

Solution: The correct pattern is - 192, - 96, - 48, - 24, - 12, - 6. So, 48 is wrong and must be replaced by (92 - 48) i.e. 44.

[#207] One term in the number series is wrong. Find out the wrong term. 16, 22, 30, 45, 52, 66
Correct Answer

(B) 45

Explanation

Solution: The correct pattern is + 6, + 8, + 10, + 12, + 14. So, 45 is wrong and must be replaced by (30 + 10) i.e. 40.

[#208] One term in the number series is wrong. Find out the wrong term. 10, 26, 74, 218, 654, 1946, 5834
Correct Answer

(D) 654

Explanation

Solution: The correct pattern is x 3 - 4. So, 654 is wrong and must be replaced by (218 x 3 - 4) i.e. 650.

[#209] One term in the number series is wrong. Find out the wrong term. 24576, 6144, 1536, 386, 96, 24
Correct Answer

(B) 386

Explanation

Solution: Each term of the series is obtained by dividing the preceding term by 4. So, 1536 is wrong and must be replaced by (1536 + 4) i.e. 384.

[#210] 3, 8, 13, 24, 41, ?
Correct Answer

(A) 70

Explanation

Solution: The pattern followed is : nth term + (n + l)th term + (n + 1) = (n + 2)th term. Thus, 1st term + 2nd term + 2 = 3rd term
2nd term + 3rd term + 3 = 4th term and so on. So, missing term = 6th term = 4th term + 5th term + 5 = 24 + 41 + 5 = 70.