10
Q:

# If a number 72k23l is divisible by 88. Then find value of k and l ?

 A) k=8 & l=2 B) k=7 & l=2 C) k=8 & l=3 D) k=7 & l=1

Answer:   B) k=7 & l=2

Explanation:

If a number to be divisile by 88, it should be divisible by both "8" and "11"

Check for '8' :
For a number to be divisible by "8", the last 3-digit should be divisible by "8"
Here 72x23y --> last 3-digit is '23y'
So y=2 [ (i.e) 232 is absolutely divisible by "8"]

Chech for '11' :
For a number to be divisible by "11" , sum of odd digits - sum of even digits should be divisible by "11"
(7 + x + 3) - (2 + 2 + y)
(7 + x + 3) - (2 + 2 + 2)
(10 + x) - 6 should be divisible by "11"
for x = 7
=> 17 - 6 = 11 [ which is absolutely divisible by "11"]

So x = 7 , y= 2.

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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0 372
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 1662
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 1564
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 3806
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 10991
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 6551
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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0 296
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 10399