problems on hcf and lcm
16. The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, […]
16. The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, […]
11. Find the lowest common multiple of 24, 36 and 40. A. 120 B. 240 C. 360 D. 480 Answer
6. The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number
1. Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in
11. The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller,
6. The sum of the digits of a two-digit number is 15 and the difference between the digits is 3.
1. If one-third of one-fourth of a number is 15, then three-tenth of that number is: A. 35 B. 36
131. A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. When it is successively
121. What is the unit digit in the product (365 x 659 x 771)? A. 1 B. 2
111. If (64)2 – (36)2 = 20 x x, then x = ? A. 70 B. 120 C. 180 D.
101. The sum of even numbers between 1 and 31 is: A. 6 B. 28 C. 240 D. 512 Answer
91. Which one of the following is a prime number ? A. 161 B. 221 C. 373
81. The difference of the squares of two consecutive even integers is divisible by which of the following integers ?
71. 397 x 397 + 104 x 104 + 2 x 397 x 104 = ? A. 250001 B.
61. When a number is divided by 13, the remainder is 11. When the same number is divided by 17,
51. 476 ** 0 is divisible by both 3 and 11. The non-zero digits in the hundred’s and ten’s places
41. On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will
31. On dividing a number by 5, we get 3 as remainder. What will the remainder when the square of
21. Which of the following number is divisible by 24 ? A. 35718 B. 63810 C. 537804 D. 3125736 Answer
11. 5358 x 51 = ? A. 273258 B. 273268 C. 273348 D. 273358 Answer &
1. Which one of the following is not a prime number? A. 31 B. 61 C. 71 D. 91 Answer
11. In how many ways can a group of 5 men and 2 women be made out of a total
6. In a group of 6 boys and 4 girls, four children are to be selected. In how many different
1. From a group of 7 men and 6 women, five persons are to be selected to form a committee
11. The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the