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Frequently Asked self Math Questions and Answer Page 329

(#M40001335) SELF QUESTION Keep an EYE

If 2p = 4q = 8r and ( 1/2p + 1/4q + 1/6r ) = 24/7 then the value of r is

(a)7/16 (b)7/32 (c)7/48 (d)7/64

Solution

let p = k/2, q = k/4, r = k/8, on putting these values in 2nd equation, we get
1/2(k/2) + 1/4(k/4) + 1/6(k/8) = 24/7
1/k + 1/k + 4/3k = 24/7
10/3k = 24/7
k = 35/36, on putting k = 35/36, r = (35/36)/8 = 35/288
None of the option is correct for the given question

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suneil (14 years ago)

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(#M40001325) SELF QUESTION Keep an EYE

1 jan 2006 is sunday
what will be the day on 2 jan 2012

kapil (14 years ago)

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(#M40001322) SELF QUESTION Keep an EYE

If 3 n+3 – 3n+2 = 6, then n is equal to

suneil (14 years ago)

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(#M40001321) SELF QUESTION Keep an EYE

What is the greatest possible integer of x such that 2X is a factor of 1210?

suneil (14 years ago)

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(#M40001320) SELF QUESTION Keep an EYE

If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^3

suneil (14 years ago)

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(#M40001316) SELF QUESTION Keep an EYE

Find the number of zeroes at the end of 50!

suneil (14 years ago)

Solved Somil Nain Read Solution (2)

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(#M40001315) SELF QUESTION Keep an EYE

Ram was asked to multiply a number by 441 and he came with an answer 70229. His
Teacher told him that all the digits except the 2’s in his answer are correct. Which of the following could be the correct answer?

Solution

441*158 = 69678
441*159 = 70119
441*160 = 70560
441*161 = 71001
since all the digits except 2 are correct , second number will be 159 and answer = 70119


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suneil (14 years ago)

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(#M40000546) SELF QUESTION Keep an EYE

A circular dartboard of radius 1 foot is at a distance of 20 feet from you. You throw a dart at it and it hits the dartboard at some point Q in the circle. What is the probability that Q is closer to the center of the circle than the periphery?
a) 0.75
b) 1
c) 0.25
d) 0.5

Sayan Bera (14 years ago)

Solved S Ranjith Kumar Read Solution (2)

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(#M40000390) SELF QUESTION BINARY OPERATIONS Keep an EYE

PROVE{1,W,W^2}IAS A GROUP W.R.T TO MULTIPLICATION

(15 years ago)

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(#M40000389) SELF QUESTION BINARY OPERATIONS Keep an EYE

PROVE THAT{1,-1,I,-I}IS A GROUP W.R.T MULTIPLICATION AND ALSO FIND THEIR INVERSE

(15 years ago)

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