Number System 4500 * ? = 3375 3/5 1/4 2/5 3/4 3/5 1/4 2/5 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 40 39 38 37 40 39 38 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 920 625 824 712 920 625 824 712 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System 56.21 +2.36+5.41 —21.4+1.5=? 34.08 64.08 54.08 44.08 34.08 64.08 54.08 44.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
Number System On converting the following base-2 numeral in base ten, 1101101, we get 106 107 109 108 106 107 109 108 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 47 48 50 49 47 48 50 49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
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