Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 101 103 97 99 101 103 97 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1082 1192 1200 1092 1082 1192 1200 ANSWER DOWNLOAD EXAMIANS APP
Number System 0.333 .... × 0.444 .... is equal to 0.121212 .... 0.777 .... 0.148148148 .... 1.333 .... 0.121212 .... 0.777 .... 0.148148148 .... 1.333 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System Find the number which multiplied by 15 is increased by 196. 20 14 28 26 20 14 28 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 17453 19765 20160 18456 17453 19765 20160 18456 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
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 28 years 31 years 30 years 29 years 28 years 31 years 30 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
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