Number system Practice Question and Answer
8 Q: The sum of the digits of a two digit number is 15. When 9 is subtracted from the given number then its digits interchanged. What will be the required original number?
969 0611e1b0daed88c5ed9487d33
611e1b0daed88c5ed9487d33- 154false
- 245false
- 378false
- 487true
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Answer : 4. "87"
Q: There are 80 students in a class out of these 15% are girls. The monthly fee of each girl is Rs.350 and monthly fee of each boy is 38% more than each girl. What is the total fee of girls and boys in the class?
1410 0611e114caed88c5ed94871d3
611e114caed88c5ed94871d3- 142215false
- 241065false
- 336420false
- 437044true
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Answer : 4. "37044"
Q: If the sum of a number and its reciprocal be 2, then the number is-
1033 061161d61a9d47920f2a703f9
61161d61a9d47920f2a703f9- 10false
- 21true
- 3-1false
- 42false
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Answer : 2. "1"
Q: The product of two numbers is 24 times the difference of these two numbers. If the sum of these two numbers is 14. Find the larger number?
1080 0610a6f835697913e67273362
610a6f835697913e67273362- 19false
- 211false
- 37false
- 48true
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Answer : 4. " 8"
Q: In a division sum, the divisor is ten times the quotient and five times the remainder. If the remainder is 46, find the dividend.
1026 1610a6f15a0824f7eeb569061
610a6f15a0824f7eeb569061- 15336true
- 25391false
- 35388false
- 45343false
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Answer : 1. "5336"
Q: When a positive integer n is divided by 5 the remainder is 2. What is the remainder when the number 3n is is divided by 5 ?
1101 160fe3ac8f8986716bdf6aa3e
60fe3ac8f8986716bdf6aa3e- 12false
- 21true
- 34false
- 43false
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Answer : 2. "1"
Q: 1 + 2 + 3 + ............. + 49 + 50 + 49 + 48 + ........+ 3 + 2 + 1 is equal to -
1925 060f7d3cb3ca0726dff34f09b
60f7d3cb3ca0726dff34f09b- 12550false
- 22380false
- 32500true
- 42400false
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Answer : 3. "2500 "
Q: Smallest prime number greater than 200? 2667 05b5cc607e4d2b4197774b519
5b5cc607e4d2b4197774b519- 1201false
- 2205false
- 3211true
- 4203false
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Answer : 3. "211"
Explanation :
Answer: C) 211 Explanation: From the trial and error method of division, 201 is divisible by 3 205 is divisible by 5 203 is divisible by 7 Hence, after eliminating three options, remained is 211 and is divisible by only 1 and itself. Therefore, 211 is the smallest prime number greater than 200.