Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 27.84 25.84 21.84 24.84 27.84 25.84 21.84 24.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System 5358 * 51 = ? 273358 273258 273348 273268 273358 273258 273348 273268 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
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 31 years 28 years 30 years 29 years 31 years 28 years 30 years 29 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 {3√4913}² = ? 333 225 289 121 333 225 289 121 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 373 353 363 343 373 353 363 343 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System The square root of 3 + “5 is : “(5/2) + “(1/2) “5 /2 - 1/”2 “3 /2 + 1/”2 “3 /2 - 1/”2 “(5/2) + “(1/2) “5 /2 - 1/”2 “3 /2 + 1/”2 “3 /2 - 1/”2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP “(5/2) + “(1/2)
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