3
Q:

# If the difference between the biggest and smallest numbers of a three consecutive numbers is one-eight of the middle number. Then Find the greatest number of the three numbers?

Q:

The sum of one-half, one-third and one-fourth of a number exceeds the number by 22. The number is

 A) 264 B) 284 C) 215 D) 302

Explanation:

Let the number be 'x'. Then, from given data

x/2 + x/3 + x/4 = x+22
13x/12 = x+22
x = 264

2 26
Q:

There are 15 lines in plane. How many intersections (Maximum) can be made ?

 A) 55 B) 105 C) 215 D) 148

Explanation:

First line will cut all other 14, similarly second will cut 13, and so on
Total = 14+13+12+11+10+9+8+7+6+5+4+3+2+1 = 105.

2 19
Q:

If 78K928L is divisible by 6, then which of the following can Q and R take ?

 A) K=2 & L=3 B) K=1 & L=4 C) K=1 & L=2 D) K=3 & L=3

Explanation:

As per divisibility rule a number is divisible by 6 means it should be divisible by 2 and 3

case 1 : the divisibility rule for 2 is the number should be end with even number
in this case R =2 & R=4

case 2 : The divisibility rule for 3 is the sum of numbers should be divisible by 3
so if we take option (2) Q=1 & R=4 the sum is 39
if we take option (3) Q=1 & R=2 the sum is 37

So Option (2) is correct 39 is divided by 3

3 23
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

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.

2 13
Q:

The product of two positive numbers is p. If each of the numbers is increased by 2, the new product is how much greater than twice the sum of the two original numbers ?

 A) p times B) 2p times C) (p + 4) times D) (2p + 3) times

Explanation:

Let the two no's be a and b;
Given product of the no's is p = ab;
If the each nos is increased by 2 then the new product will be
(a+2)(b+2) = ab + 2a + 2b + 4
= ab + 2(a+b) + 4
= p + 2(a+b) + 4
Hence the new product is (p+4) times greater than twice the sum of the two original numbers.