A six digit number is formatted by repeating a three digit number: for example, 256, 256 or 678, 678 etc. Any number of this form is always exactly divisible by:
(A) 7 only
(B) 11 only
(C) 13 only
(D) 1001 only
Find the HCF of 306, 204 and 136.
(A) 17
(B) 51
(C) 34
(D) 68
The greatest number, which when subtracted from 5834, gives a number exactly divisible by each of 20, 28, 32 and 35, is
(A) 1120
(B) 4714
(C) 5200
(D) 5600
The least number which when divided by 4, 6, 8, 12 and 16 leaves a remainder of 2 in each case is:
(A) 46
(B) 48
(C) 50
(D) 56
The smallest perfect square divisible by each of 6, 12 and 18 is :
(A) 196
(B) 144
(C) 108
(D) 36
Three men step off together from the same spot. Their steps measure 63 cm, 70 cm and 77 cm respectively. The minimum distance each should cover so that all can cover the distance in complete steps is
(A) 9630 cm
(B) 9360 cm
(C) 6930 cm
(D) 6950 cm
The sum of two numbers is 84 and their HCF is 12. Total number of such pairs of number is
(A) 2
(B) 3
(C) 4
(D) 5
Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is:
(A) 21
(B) 24
(C) 28
(D) 84
The HCF and LCM of two numbers are 44 and 264 respectively. If the first number is divided by 2, the quotient is 44. The other number is:
(A) 147
(B) 528
(C) 132
(D) 264
The area of triangle is half the area of square. The perimeter of the square is 224 cm. What is the area of triangle?
(A) 1856 cm2
(B) 1658 cm2
(C) 1558 cm2
(D) 1586 cm2
(E) None of these
a=56, so that Area of square is=a2=56*56
so that Area of Triangle is a2/2=1568
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