1.
A rectangular
courtyard 3.78 meters long 5.25 meters wide is to be paved exactly with square
tiles, all of the same size. What is the largest size of the tile which could
be used for the purpose?
A) 14 cms B) 21 cms C)
42 cms D) None of these
2.
The greatest
number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively
is:
A) 123 B)
127 C)
235 D) 305
3.
The sum of two
numbers is 528 and their H.C.F is 33. The number of pairs of numbers satisfying
the above condition is
A) 4 B) 6 C) 8 D) 12
4.
Product of two
co-prime numbers is 117. Their L.C.M
should be
A) 1 B) 117 C) Equal to their H.C.F D) cannot be calculated a
5.
The L.C.M of two
numbers is 495 and their H.C.F is 5. If the sum of the numbers is 100, then
their difference is
A) 10 B) 46 C)
70 D)
90
6.
The product of
two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:
A) 1 B)
2 C) 3 D) 4
7.
The H.C.F and
L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75
and 125 , then that number is
A) 77 B) 88 C) 99 D) 110
8.
L.C.M of two
prime numbers x and y (x>y) is 161. The value of 3y-x is :
A) -2 B) -1 C) 1 D) 2
9.
The G.C.D of
1.08, 0.36 and 0.9 is
A) 0.03 B) 0.9 C) 0.18 D) 0.108
10. Three number are in the ratio of 3 : 4 : 5 and their
L.C.M. is 2400. Their H.C.F. is:
A) 40 B) 80 C) 120
D) 200
ANSWER KEYS
|
1.B
|
2.B
|
3.A
|
4.B
|
5.A
|
|
6.B
|
7.A
|
8.A
|
9.C
|
10.A
|
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