Number System Find the number of factors of 300 excluding 1 and itself. 16 15 18 14 16 15 18 14 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the least value of 3x + 4y if x2y3 = 6. 6 7 3 10 6 7 3 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is: 10 12 16 15 10 12 16 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 103 99 97 101 103 99 97 101 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 The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 810 Rs. 830 Rs. 800 Rs. 820 Rs. 810 Rs. 830 Rs. 800 Rs. 820 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the price of a pen be 'x' and that of pencil be 'y' Then 87x + 29y = 783Multiplying eqn (i) by 30/29 we get (87x) x 30/29 + (29y) 30/29 = 783 x 30/29∴ 90x + 30y = 810
Number System 16.23 x 12.9 + 17.32 = ? 236.687 226.687 246.687 None of these 236.687 226.687 246.687 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
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