1 If 6x43 - 46y9=1904,which of the following should come in place of x ? A) 4 B) 6 C) 9 D) Cannot be determined E) None of these
2 What should be the maximum value of B in the following equation ? 5A9 - 7B2 + 9C6 = 823 A) 5 B) 6 C) 7 D) 9
3 Which of the following can be a product of two 3-digit numbers **3 and **8 ? A) 1010024 B) 991014 C) 9124 D) None of these
4 A boy multiplies 987 by a certain number and obtains 559981 as his answer. If in the answer, both 9's are wrong but the other digits are correct, then the correct answer will be : A) 553681 B) 555181 C) 555681 D) 556581
5 When a certain number is multiplied by 13, the product consists entirely of fives. The smallest such number is : A) 41625 B) 42135 C) 42515 D) 42735
6 What should come in place of * mark in the following equation ? 1*544 / 148 = 78 A) 1 B) 4 C) 6 D) 8 E) None of these
7 There are four prime numbers written in ascending order. The product of the first three is 385 and that of the last three is 1001. The last number is : A) 11 B) 13 C) 17 D) 19
8 How many numbers between 400 and 600 begin with or end with a digit of 5 ? A) 40 B) 100 C) 110 D) 120
10 If (12 + 22 + 32 + ..... + 102) = 385, then the value of (22 + 42 + 62 + ..... + 202) is : A) 770 B) 1155 C) 1540 D) 385
12 How many of the following numbers are divisible by 3 but not by 9 ? 2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276 A) 5 B) 6 C) 7 D) None of these
13 The largest natural number which exactly divides the product of any four consecutive natural numbers is : A) 6 B) 12 C) 24 D) 120
14 The difference between the squares of two consecutive odd integers is always divisible by : A) 3 B) 6 C) 7 D) 8
15 The smallest number to be added to 1000 so that 45 divides the sum exactly is : A) 10 B) 20 C) 35 D) 80
