Number system Practice Question and Answer
8 Q: Ishita can read a newspaper in 'n' minutes. What part of the newspaper can she read in 7 minutes (n>7)
950 06426dc67b34a0b67fc16c43e
6426dc67b34a0b67fc16c43e- 1$${n\over7}$$false
- 2$${7n^2}$$false
- 3$${7n}$$false
- 4$${7\over n}$$true
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Answer : 4. "$${7\over n}$$"
Q: If 16 : X :: X: 196, find the positive value of x?
950 06426e2fa7ac9a186e4dea181
6426e2fa7ac9a186e4dea181- 160false
- 262false
- 356true
- 464false
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Answer : 3. "56"
Q: many times will the buttons of a typewriter be pressed to write the numbers 121 to 1346?
945 06321c6f24eed097ecb5330ee
6321c6f24eed097ecb5330ee- 13675false
- 24018false
- 34021false
- 44025true
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Answer : 4. "4025"
Q: 3¹¹ + 3¹² + 3¹³ + 3¹⁴ is divisible by which of the following?
939 06321c32a4eed097ecb5308ce
6321c32a4eed097ecb5308ce- 17false
- 28true
- 311false
- 414false
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Answer : 2. "8"
Q: The average of six consecutive odd numbers is 26. Find the difference between the largest and the smallest of these numbers.
938 064225aaf5bff3d098d0b9904
64225aaf5bff3d098d0b9904- 18false
- 216false
- 310true
- 412false
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Answer : 3. "10"
Q: For what value of ‘y’, $$ {x^{2}+{1\over12}{x}+y^{2}}$$ is perfect square?
937 0606426628aaa67545d7d4bcf
606426628aaa67545d7d4bcf- 11/3false
- 21/12false
- 31/24true
- 41/6false
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Answer : 3. "1/24"
Q: Evaluate 743 x 999.
935 0638f3a7c58400a550dc9590b
638f3a7c58400a550dc9590b- 174257false
- 2784527false
- 3724457false
- 4742257true
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Answer : 4. "742257"
Q: A number consists of two digits. If the number formed by interchanging the digits is added to the original number, the resulting number (i.e. the sum) must be divisible by
934 0650d423410a18f5082eccafc
650d423410a18f5082eccafc- 111true
- 29false
- 35false
- 43false
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Answer : 1. "11"
Explanation :
Let the number be 10x + y
After interchanging the digits,
the number obtained = 10y + x
According to the question,
Resulting number
= 10x + y + 10y + x
= 11x + 11y
= 11 (x + y)
which is exactly divisible by 11.

