Home
Class 14
REASONING
15 17 21 29 45 77 ?...

15 17 21 29 45 77 ?

A

125

B

141

C

173

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
The given sequence of number follows the pattern :
`+ 2, + 4 (+2 xx 2), +8 (+2 xx 4), + 16 (+2 xx 8),`
`+ 32 (+2 xx 16), + 64 (+2 xx 32)`

Therefore, Missing number = 77 + 64 = 141.
Promotional Banner

Topper's Solved these Questions

  • SERIES COMPLETION : NUMBER

    LUCENT PUBLICATION|Exercise EXERCISE-1 (type-IV : Combination of Series )|5 Videos

  • SERIES COMPLETION : NUMBER

    LUCENT PUBLICATION|Exercise EXERCISE-1 (type-V : Triangular Pattern Series )|3 Videos

  • SERIES COMPLETION : NUMBER

    LUCENT PUBLICATION|Exercise EXERCISE-1(Type-II : Squares/Cubes Series )|12 Videos

  • SERIES COMPLETION : MIXED SERIES

    LUCENT PUBLICATION|Exercise Exercise ( Type-V: Miscellaneous )|1 Videos

  • SITUATION REACTION TEST

    LUCENT PUBLICATION|Exercise EXERCISE (DECISION MAKING )|5 Videos

Similar Questions

Explore conceptually related problems

Find out the wrong term. 15, 16, 22, 29, 45, 70

Find the mean of the following data: 19 21 23 25 27 29 31 13 15 16 18 16 15 13

Find the mean of the following data: x : 19 21 23 25 27 29 31 f : 13 15 16 18 16 15 13

Find the mean of the following frequency distribution: Classes: 0-20 20-40 40-60 60-80 80-100 Frequency: 15 18 21 29 17

Find the mean, median and mode of the following data: (i) 7, 19, 19, 7, 25, 7 (ii) 21, 24, 21, 6, 15, 18, 21, 45, 9, 6, 27 and 15

Find the next number in the given series 9,11, 15, 17, 21, 23 ?

Find the mode of the data : 14, 6, 9, 15, 14, 9, 21, 21, 25, 21, 27, 29, 21, 8, 6, 15, 25, 14, 21, 9, 21, 25, 27, 29, 6, 14, 21, 21, 27, 25, 27, 9, 15, 14, 9.

15 12 17 10 ? 8 21 6

Solve the simultaneous equations: 15x + 17y = 21, 17x + 15y =11

The sum of the first 100 terms common to the series 17, 21, 25, 29, 33, …… ahd 16 , 21 ,26, 31 , 36 …. is