Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6184 6084 6048 5084 6184 6084 6048 5084 ANSWER DOWNLOAD EXAMIANS APP
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1082 1200 1192 1092 1082 1200 1192 ANSWER DOWNLOAD EXAMIANS APP
Number System (√6 + 1)² = ? + 2√6 5 6 7 8 5 6 7 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 80 88 40 44 80 88 40 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5. 197 207 187 219 197 207 187 219 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.
Number System 0.333 .... × 0.444 .... is equal to 1.333 .... 0.148148148 .... 0.777 .... 0.121212 .... 1.333 .... 0.148148148 .... 0.777 .... 0.121212 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
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