Searching for "0"

Q:

Find out the wrong term in the series 0, 2, 3, 5, 8, 10, 15, 18, 24, 26, 35

A) 18 B) 35
C) 24 D) 8
 
Answer & Explanation Answer: A) 18

Explanation:

The given sequence is a combination of two series:
i)0, 3, 8, 15, 24, 35
ii)2, 5, 10, 18, 26
The pattern in both i, ii is +3, +5, +7, . . . .
So, in ii) 18 is wrong and must be replaced by (10 + 7) = 17

Report Error

View Answer Report Error Discuss

Filed Under: Number Series

Q:

Find out the wrong term in the series 380, 188, 92, 48, 20, 8, 2

A) 20 B) 48
C) 92 D) 2
 
Answer & Explanation Answer: B) 48

Explanation:

The correct pattern is -192, -96, -48, -24, -12, -6
So, 48 is wrong and must be replaced by (92 - 48) = 44

Report Error

View Answer Report Error Discuss

Filed Under: Number Series

Q:

Find out the wrong term in the series 3, 4, 10, 32, 136, 685, 4116

A) 4116 B) 685
C) 136 D) 32
 
Answer & Explanation Answer: D) 32

Explanation:

The correct pattern is *1+1, *2+2, *3+3, *4+4, . . . . .
So,32 is wrong term and must be replaced by (10 * 3 + 3) = 33

Report Error

View Answer Report Error Discuss

Filed Under: Number Series

Q:

What least number must be subtracted from 13601, so that the remainder is divisible by 87 ?

A) 23 B) 31
C) 29 D) 37
 
Answer & Explanation Answer: C) 29

Explanation:

87)13601(156
       87
       -----
       490
       435
        -----
        551
        522
         -----
         29
         -----
Required number is 29.

Report Error

View Answer Report Error Discuss

Filed Under: Numbers

Q:

Find out the wrong term in the series 2, 5, 10, 50, 500, 5000

A) 5000 B) 500
C) 10 D) 50
 
Answer & Explanation Answer: A) 5000

Explanation:

Each term of the series is the product of the preceding two terms
So, 5000 is wrong and it must be replaced by (500*50) = 25000

Report Error

View Answer Report Error Discuss

Filed Under: Number Series

Q:

Find out the wrong term in the series 83,92,85,90,85,88

A) 85 B) 88
C) 90 D) 92
 
Answer & Explanation Answer: A) 85

Explanation:

The correct pattern is +9,-7,+5,-3,+1
So,85 is wrong term and must be replaced by 90-3=87

Report Error

View Answer Report Error Discuss

Filed Under: Number Series

Q:

476 ** 0 is divisible by both 3 and 11.The non zero digits in the hundred's and ten's places are respectively:

A) 6 and 2 B) 8 and 2
C) 6 and 5 D) 8 and 5
 
Answer & Explanation Answer: D) 8 and 5

Explanation:

Let the number  be 476ab0 

 

476ab0 is divisible by 3 

=> 4 + 7 + 6 + a + b + 0 is divisible by 3

=> 17 + a + b is divisible by 3 ------------------------(i)

 

476ab0 is divisible by 11

[(4 + 6 + b) -(7 + a + 0)] is 0 or divisible by 11

=> [3 + (b - a)] is 0 or divisible by 11  --------------(ii)

 

Substitute the values of a and b with the values given in the choices and select the values which satisfies both Equation 1 and Equation 2.

 

if a=6 and b=2, 

17 + a + b = 17 + 6 + 2 = 25 which is not divisible by 3 --- Does not meet equation(i).Hence this is not the answer

 

if a=8 and b=2, 

17 + a + b = 17 + 8 + 2 = 27 which is divisible by 3 --- Meet equation(i)

[3 + (b - a)] = [3 + (2 - 8)] = -3 which is neither 0 nor divisible by 11---Does not meet equation(ii).Hence this is not the answer

 

if a=6 and b=5, 

17 + a + b = 17 + 6 + 5 = 28 which is not divisible by 3 --- Does not meet equation (i) .Hence this is not the answer

 

 

if a=8 and b=5, 

17 + a + b = 17 + 8 + 5 = 30 which is divisible by 3 --- Meet equation 1

[3 + (b - a)] = [3 + (5 - 8)] = 0 ---Meet equation 2

Since these values satisfies both equation 1 and equation 2, this is the answer

Report Error

View Answer Report Error Discuss

Filed Under: Numbers

Q:

Find out the wrong term in the series 169,144,121,100,85,64

A) 144 B) 100
C) 85 D) 64
 
Answer & Explanation Answer: C) 85

Explanation:

The sequence is 13*13,12*12,11*11,10*10,9*9,8*8, . . . . . .
So,85 is wrong term and must be replaced by 9*81

Report Error

View Answer Report Error Discuss

Filed Under: Number Series