Number System 124, 235, 447, 760, 1174, ? 1689 1589 1489 1389 1689 1589 1489 1389 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System In how many different ways can the letters of the word CORPORATION be arranged ? None of these 1326400 2326400 3326400 None of these 1326400 2326400 3326400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP CORPORATION = 11 letters 'O' comes thrice,'R' twice.∴ total no. of ways = 111/3121 = 3326400
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 21.84 27.84 25.84 24.84 21.84 27.84 25.84 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 When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 97 103 99 101 97 103 99 101 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 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6080 5800 5976 6000 6080 5800 5976 6000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 76 75 73 74 76 75 73 74 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
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