11, 5, 20, 12, 40, 26, 74, 54

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Solution

The correct option is C 40
The given sequence is a combination of two series :
I. 11, 20, 40, 74 and II. 5, 12, 26, 54
The correct pattern in I is + 9, + 18, + 36,.....
So, 40 is wrong and must be replaced by (20 + 18) i.e. 38.

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Similar questions

Q. In following questions, one term in number series is incorrect.
Find out the incorrect number 11, 5, 20, 12, 40, 26, 74, 54

Q. Simplify:

(i)(−8) × 9 + (−8) × 7
(ii) 9 × (−13) + 9 × (−7)
(iii) 20 × (−16) + 20 × 14
(iv) (−16) × (−15) + (−16) × (−5)
(v) (−11) × (−15) + (−11) × (−25)
(vi) 10 × (−12) + 5 × (−12)
(vii) (−16) × (−8) + (−4) × (−8)
(viii) (−26) × 72 + (−26) × 28

Q. Find the median for the following data.

Marks	$11 - 15$	$16 - 20$	$21 - 25$	$26 - 30$	$31 - 35$	$36 - 40$
Frequency	$7$	$10$	$13$	$26$	$9$	$5$

Q. Simplify:

40 + \frac{20 - 12}{2 (20) - 12 - 11} \times 10

Find the mean for the following data.

$\begin{matrix} C l a s s & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 F r e q u e n c y & 5 & 11 & 12 & 13 & 9 \end{matrix}$

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11, 5, 20, 12, 40, 26, 74, 54

The correct option is C 40The given sequence is a combination of two series :I. 11, 20, 40, 74 and II. 5, 12, 26, 54The correct pattern in I is + 9, + 18, + 36,.....So, 40 is wrong and must be replaced by (20 + 18) i.e. 38.

The correct option is C 40
The given sequence is a combination of two series :
I. 11, 20, 40, 74 and II. 5, 12, 26, 54
The correct pattern in I is + 9, + 18, + 36,.....
So, 40 is wrong and must be replaced by (20 + 18) i.e. 38.