Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 36 56 52 48 36 56 52 48 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System 486+32×25—59=? 582 528 596 567 582 528 596 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System The average age of seven boys sitting in a row facing North is 26 years. If the average age of first three boys is 19 years and the average age of last three boys is 32 years, what is the age of the b 29 years 30 years 31 years 28 years 29 years 30 years 31 years 28 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Age of the fourth boy = (26 x 7 - 3 x 19 - 3 x 32) years = (182 - 57 - 96) years = 29 years
Number System 65 x 288 ÷ 52 = 1.8 x ? 210 180 200 190 210 180 200 190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 65x288/52x1.8 = 200
Number System 666 / 6 / 3 = ? 111 333 37 84 111 333 37 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 222 204 210 234 222 204 210 234 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
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