# lcm

3,868 total views

3,868 total views Previous QuestionNext Question If n=1+x, where x is the product of four consecutive positive integers, then which of the following is/are true? [CAT, 1999] A. N is odd B. n is prime C. n is a perfect square a. A and C only b. A and B only c. A […]

3,083 total views

3,083 total views Previous QuestionNext Question What is the digit in unit’s place of 251? [CAT, 1998]a. 2 b. 8 c. 1 d. 4 Solution: Although the problem of large exponents have been solved in many of the questions whose links can be found in this website, yet the exponent of 2 deserves a special attention. If the exponent […]

2,094 total views

2,094 total views Previous QuestionNext Question If n3 is odd, which of the following statements are true? [CAT, 1998] I. n is odd. II. n2 is odd. […]

3,374 total views

3,374 total views Previous QuestionNext Question A student instead of finding the value of of a number, found the value of of the number. If his answer differed from the actual one by 770, find the number. [CAT, 1997] a. 1584 b. 2520 c. 1728 d. 1656 Solution: A student instead of […]

2,135 total views

2,135 total views Previous QuestionNext Question Find the smallest number which when increased by 5 is exactly divisible by 8, 11 and 24. [CAT, 1994] Solution: Suppose that the smallest number is X and we have to increase it by 5 i.e., we will add 5 to it. X+5, and it should be divisible by 8, 11 and 24. To […]

1,037 total views

1,037 total views Previous QuestionNext Question The smallest number which when divided by 4, 6 or 7 leaves a remainder of 2, is [1993]a.86 b.80 c.62 d.44 Solution: LCM:This problem can easily be solved if we find out the LCM of 4, 6 7 and add 2 to that. But finding out LCMs is easy […]

2,100 total views

2,100 total views Previous QuestionNext Question Which is the least number that must be subtracted from 1856 so that the remainder, when divided by 7, 12, and 16, is 4? [1994] a. 137 b. 1361 C. 140 d. 157 […]

4,665 total views, 4 views today

4,665 total views, 4 views today Previous Question Next Question How many pairs of positive Integers m, n satisfy , where n is an odd integer less than 60? a. 4 b. 7 c. 5 d. 3 [CAT, 2007] Solution: […]