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 Numbers Questions

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Q:

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

 

A) 33 B) 44
C) 55 D) 66
 
Answer & Explanation Answer: C) 55

Explanation:

All such 2 digit numbers are 11,22,33,44....... upto 99

Forms an AP

So sum = n/2(a+l)

= 9/2(11+99)

Average = sum/9 = ½(11+99) = 55

 

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0 1103
Q:

A number exceeds its 1/6 by 30. What is the number?

A) 120 B) 150
C) 36 D) 24
 
Answer & Explanation Answer: C) 36

Explanation:
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Q:

How many numbers are there from 300 to 650 which are completely divisible by both 5 and 7?

A) 8 B) 9
C) 10 D) 12
 
Answer & Explanation Answer: C) 10

Explanation:
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0 1083
Q:

What least number must be subtracted from 3401, so that the sum is completely divisible by 11?

A) 3 B) 1
C) 2 D) 0
 
Answer & Explanation Answer: C) 2

Explanation:
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0 1074
Q:

All rational numbers are ____ numbers.

A) integer B) whole
C) irrational D) real
 
Answer & Explanation Answer: D) real

Explanation:
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0 1058
Q:

Which of the following is not a Triangular number?

A) 15 B) 10
C) 5 D) 3
 
Answer & Explanation Answer: A) 15

Explanation:
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3 1056
Q:

The 3rd and 8th term of an arithmetic progression are -14 and 1 respectively. What is the 11th term?

A) 14 B) 16
C) 20 D) 10
 
Answer & Explanation Answer: D) 10

Explanation:
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0 1054
Q:

The  sum  of  three  prime  numbers  is  100.  If  one  of  them  exceeds  another  by  36,  then  one  of  the numbers is

A) 17 B) 29
C) 43 D) none
 
Answer & Explanation Answer: D) none

Explanation:
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