Number System The Twenty-First Century will start on January 1 in the year 2000 2001 2100 2101 2000 2001 2100 2101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
Number System If the numerator of a fraction is increased by 200% and the denominator by 300%, the fraction thus obtained is 1/36. What is the original fractions ? 4/9 5/9 6/9 3/9 4/9 5/9 6/9 3/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fractions be x/yx + 200% of x/y + 300% of y = 1/3= x + 2x/y + 3y = 1/3= 3x/4y = 1/3Hence x/y = 4/9
Number System What should come in the place of question mark (?) in the number series given below? 158 157 159 160 158 157 159 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System (95.6x 910.3) ÷ 92.56256 = 9? 13.34 12.24 15.54 14.44 13.34 12.24 15.54 14.44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 945 Rs. 926 Rs. 1054 Rs. 986 Rs. 945 Rs. 926 Rs. 1054 Rs. 986 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 120 112 124 116 120 112 124 116 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
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