60
Q:

In a two-digit number, the digit in the unit's place is more than twice the digit in ten's place by 1. If the digits in the unit's place and the ten's place are interchanged,difference between the newly formed number and the oiginal number is less than the original number by 1. What is the original number ?

A) 35 B) 36
C) 37 D) 39

Answer:   C) 37



Explanation:

Let the ten's digit be x. Then, unit's digit = 2x + 1.

[10x + (2x + 1)] - [{10 (2x + 1) + x} - {10x + (2x + 1)}] = 1

<=> (12x + 1) - (9x + 9) = 1 <=> 3x = 9, x =  3.

So, ten's digit = 3 and unit's digit = 7. Hence, original number = 37.

Q:

If a 10-digit number 7220x558y2 is divisible by 88, then the value of (5x + 5y) can be :

 

A) 35 B) 25
C) 15 D) 10
 
Answer & Explanation Answer: C) 15

Explanation:
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0 902
Q:

If a 10-digit number 1230x558y2 is divisible by 88, then the value of (5x + 5y) is:

 

A) 40 B) 20
C) 50 D) 30
 
Answer & Explanation Answer: A) 40

Explanation:
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1 1703
Q:

If an 8-digit number 30x558y2 is divisible by 88, then the value of (6x +6y) is:

 

A) 30 B) 35
C) 42 D) 66
 
Answer & Explanation Answer: C) 42

Explanation:
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0 1672
Q:

If the seven digit number 54x29y6 (x > y)is divisible by 72, what is the value of (2x + 3y)?

 

A) 38 B) 13
C) 32 D) 23
 
Answer & Explanation Answer: D) 23

Explanation:
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0 3985
Q:

Which among the following numbers is exactly divisible by 7, 11 and 13 ?

 

A) 14982 B) 15004
C) 14993 D) 15015
 
Answer & Explanation Answer: D) 15015

Explanation:
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0 11424
Q:

Which among the following numbersis exactly divisible by 11, 13 and 7?


(a) 624613


(b) 624624


(c) 624635


(d) 624646

 

A) (b) B) (c)
C) (a) D) (d)
 
Answer & Explanation Answer: A) (b)

Explanation:
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0 6744
Q:

The ten-digit number 2x600000y8 is exactly divisible by 24. If x ≠ 0 and y ≠ 0, then the least value of (x + y) is equal to:

 

A) 5 B) 8
C) 9 D) 2
 
Answer & Explanation Answer: A) 5

Explanation:
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0 309
Q:

The 10-digit number 79x00001y6 is exactly divisible by 88. What is the value of (x + 3)?

 

A) 5 B) 9
C) 6 D) 7
 
Answer & Explanation Answer: B) 9

Explanation:
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0 10544