Home
Class 9
MATHS
Complete the series: 2, 5, 9, 19, 37,...

Complete the series: 2, 5, 9, 19, 37, ...... (a) 76 (b) 74 (c) 75 (d) None of these

A

73

B

75

C

76

D

78

Text Solution

Verified by Experts

The correct Answer is:
B
Clearly, we have: `2 xx 2 + 1 = 5, 5 xx 2 – 1 = 9,9 xx 2 + 1 = 19,19 xx 2 – 1 = 37`,….. So, missing term = `37 xx 2 + 1 = 75`.
Hence, the answer is (b).
Promotional Banner

Similar Questions

Explore conceptually related problems

9. 02-5. 7=\ ? (a) 3.32 (b) 3.23 (c) 2.32 (d) None of these

The maximum sum of the series 20+19 1/3+18 2/3+...... is (A) 310 (B) 300 (C) 0320 (D) none of these

( 1+3+5+7+9+11 )^ (3/2) = (a)36 (b) 216 (c)256 (d) none of these

9 less than a literal x is written as (a) 9-x (b) x-9 (c) x+9 (d) None of these

For all real value of x , the maximum value of the expression x/(x^2-5x+9) is 1 (b) 45 (c) 90 (d) None of these

Tangent and normal drawn to a parabola at A(a t^2,2a t),t!=0 meet the x-axis at point B and D , respectively. If the rectangle A B C D is completed, then the locus of C is (a)y=2a (b) y+2a=c (c)x=2a (d) none of these

If 57 : x=51 : 85 , then the value of x is: (a) 95 (b) 76 (c) 114 (d) None of these

If two vertices of a triangle are (-2,3) and (5,-1) the orthocentre lies at the origin, and the centroid on the line x+y=7 , then the third vertex lies at (a) (7,4) (b) (8,14) (c) (12 ,21) (d) none of these

In the given figure, what is the radius of the inscribed circle? 3/2 (b) 5/2 (c) 7/5 (d) none of these

If A = {2,4,6,8} , B = {3,6,9,12} and C = {0,5,10,15} then the overlapping sets are (a) A and B (b) B and C (c) A and C (d) none of these