Number System What is 50% of 40% of Rs. 3,450? 640 670 690 630 640 670 690 630 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 4 None 2 6 4 None 2 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System The Twenty-First Century will start on January 1 in the year 2001 2000 2101 2100 2001 2000 2101 2100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
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 ? 5976 6000 6080 5800 5976 6000 6080 5800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 25/144 5/12 12/5 144/25 25/144 5/12 12/5 144/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 61480 63480 60480 62480 61480 63480 60480 62480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
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