Number System How many numbers up to 200 are divisible by 2 and 3 both? 35 29 33 27 35 29 33 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 200/6 = 33 2/6 => 33 Numbers
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 73 75 74 76 73 75 74 76 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System ?2704 x ?2209=? 1444 3444 4444 2444 1444 3444 4444 2444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2444
Number System An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white ? 90/190 91/190 89/190 92/190 90/190 91/190 89/190 92/190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total possible outcomes = 20C2 = 20 x 19/1 x 2 = 190Total favourable outcomes = 7C1 x 13C1 = 7 x 13 = 91∴ Required probability = 91/190
Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 13 9 11 1 13 9 11 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System 106 * 106 - 94 * 94 = ? 2400 2000 1906 1904 2400 2000 1906 1904 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS