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Frequently Asked self Math Questions and Answer Page 328

(#M40001754) SELF QUESTION Shafiur Rahman20 January Keep an EYE

A boy wants to make cuboids of dimension 5m, 6m and 7m from small cubes of .03 m3. Later he realized he can make same cuboids by making it hollow. Then it takes some cubes less. What is the number of the cubes to be removed?

Solution

volume of the small cube = 0.03 m^3
so side of this cube = cubic root of 0.03 m^3 = .312 m
so after removing the outermost layer the dimensions for the inner cuboid will be (5-2*0.312), (6-2*0.312), (7-2*0.312)
so total volume will be (4.376)*(5.376)*(6.376) = 150 m^3
so no of cubes will be 150/0.03 = 5000
so we can remove 5000 inner cubes


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Aashu (14 years ago)

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(#M40001501) SELF QUESTION What is the next number in the following series? Keep an EYE

1,11,21,1211,111221,312211,...?

Solution

1
in previous number one time one so 11
in previous number 2 times one so 21
in previous number one time two and one time one so 1211
in previous number one time one, one time two and two times one so 111221
in previous number three times one, two times two and one time one so 312211
similarly in previous number one time three, one time one, two times two and two times one so 13112221

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Harini Reddy (14 years ago)

Solved Read Solution (2)

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(#M40001490) SELF QUESTION Keep an EYE

an unbaised coin is tossed until it shows up the same face in 2 consicative throws wat is the probability that the no of tosses is not more than 4.1)3/4 2)1/4 3)7/8 4)1/8

swapna (14 years ago)

Solved Dimple Read Solution (2)

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(#M40001400) SELF QUESTION Keep an EYE

The face of a clock is divided into three parts such that the total hours in the first part, is equal to the sum of the total hours in the other two parts. What is the total hours in the bigger part?

suneil (14 years ago)

Solved Aashu Read Solution (2)

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(#M40001378) SELF QUESTION Keep an EYE

smallest three digit prime no is ?
107 109 113 n0ne of these

kapil (14 years ago)

Solved Subhradip Biswas Read Solution (4)

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(#M40001350) SELF QUESTION Keep an EYE

A plane moves from a place 9N 40E to a place 9N 40W taking 8 hours to travel. If the plane had left at 10.00 a.m. then what is the local time of arrival at the destination?

suneil (14 years ago)

Solved Abhishek Divakar Read Solution (1)

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(#M40001348) SELF QUESTION Keep an EYE

If log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is:

(a)0.6532 (b)0.7727 (c)0.3266 (d)0.3796 (e)none of these

suneil (14 years ago)

Solved Abhishek Divakar Read Solution (4)

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(#M40001344) SELF QUESTION Keep an EYE

The supplementary of an angle is thrice its complimentary. Find the angle.

(a)60 (b)45 (c)90 (d)180

suneil (14 years ago)

Solved Rohit Read Solution (2)

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(#M40001338) SELF QUESTION Keep an EYE

If each interior angle of a regular polygon is 144o, the it is

Option
(a) Octagon
(b) Decagon
(c) Dodecagon
(d) None of these

suneil (14 years ago)

Solved Ravi B Mali Read Solution (2)

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(#M40001336) SELF QUESTION Keep an EYE

The value of ( 9-22 – 9-23 ) is

(a)1 (b)8x9^-23 (c)9x9^-22 (d)none of these

Solution

Please ask again without font problem

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suneil (14 years ago)

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