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self Math Questions and Answer Page 320

(#M40001765) SELF QUESTION Amit Raman17 January Keep an EYE

If there are 2 wheelers and 4 wheelers parked in a school located at the heart of the city, find the number of 4 wheelers parked there if there were 20 two wheelers parked there
a)48 b)50 c)52 d)64

Aashu (14 years ago)

Unsolved Read Solution (2)

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(#M40001764) SELF QUESTION Mayank Singh17 January Keep an EYE

There is 7 friends (A1, A2, A3....A7).If A1 have to have shake with all without repeat. How many handshakes possible?
a) 6 b) 21 c) 28 d) 7

Solution

since one person in the hand shake is definitely A1 so no. of methods will be 6 only

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Aashu (14 years ago)

Solved Read Solution (4)

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(#M40001763) SELF QUESTION Zoya Husain18 January Keep an EYE

A car manufacturer produces only red and blue models which come out of the final testing area at random. What is the probability that five consecutive cars of same color will come through the test area at any one time?
a) 1 in 16 b) 1 in 125 c) 1 in 32 d) 1 in 25

Aashu (14 years ago)

Solved Rohit Srivastava Read Solution (1)

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(#M40001762) SELF QUESTION Zoya Husain18 January Keep an EYE

A toy train produces 10 different sounds when it moves around a circular toy track of radius 5 m at 10 m per min. However, the toy train is defective and it now produces only 2 different tunes at random. What are the odds that the train produces for consecutive music tones of the same type?
a) 1 in 16 B) 1 in 4+ c) 1 in 8 d) 1 in 32

Solution

Question is not complete. No. of attempts are not given.

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Aashu (14 years ago)

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(#M40001761) SELF QUESTION Rohit Verma18 January Keep an EYE

. A lady had fine gloves and hats. 25 blue, 7 red and 9 gey. She had to select a pair among them. But there was no light so she had to select in darkness the correct pair with a glove and a hat. Therefore how many combinations of same color she can select?

Aashu (14 years ago)

Unsolved Read Solution (2)

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(#M40001760) SELF QUESTION Mohammad Faraz18 January Keep an EYE

There was a grandmother in a village who had a grandchild. Upon asking her grandchild's age she told dat she is as older as many days old as her daughter's age in weeks and as many days as her own age in years. The sum of the three is 130. then how old is the child?

Solution

this question is out of sense. But if we consider it as a question only then the answer by VICK is right.

This question can be changed in this manner -

There was a grandmother in a village who had two grandchild. Upon asking her younger grandchild's age she told that she is as older as many days old as her elder grandchild's age in weeks and as many days as her own age in years. The sum of the three is 130. then how old is the younger child?
answer:
grandmother age - 127 year.
elder grand child - 127 weeks ~ 2.5 year
younger child - 127 days ~ .5 year


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Aashu (14 years ago)

Solved

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(#M40001759) SELF QUESTION Niharika Srivastava19 January Keep an EYE

36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is
" 11
" 18
" 12
" 13

Solution

Answer by SUMAN is correct.
because if we take person a1 in the set then it will cover a36 and a2 for shaking hand.similarly if we take person a4 in the set then it will cover a5 and a3 for shaking hand and so on, so minimum 12 persons are required.

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Aashu (14 years ago)

Solved Read Solution (3)

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(#M40001758) SELF QUESTION Zoya Husain19 January Keep an EYE

In a hotel we can order two types of varities, but we can make 6 more variteis in home. One can choose the four varities with two from hotel as must. Find how many ways one can order.
a) 14 b) 15 c) 56 d) 28

Aashu (14 years ago)

Solved Ram Reddy Katkuri Read Solution (4)

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(#M40001757) SELF QUESTION Noor Fatima19 January Keep an EYE

if there are 30 cans out of them one is poisened if a person tastes very little he will die within 14 hours so if there are mice to test and 24 hours to test, how many mices are required to find the poisened can?
A)3 B)2 C)6 D)1

Aashu (14 years ago)

Solved vamsi krishna reddy Read Solution (1)

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(#M40001756) SELF QUESTION Rohit Verma19 January Keep an EYE

The bacteria have the probability of split into 3 and probability to die is 1/3rd of the total bacteria. Let the probability is P. Some of them survived with probability 1/5.Then which among the following relation is true?
a)P=1/3+1/5*3 b)P=1/5*(1/8-3)

Solution

Question is not written in a correct language
Here in the question "Let the probability is P." is meaningless, because for which event probability is given, is not known.
Dear Aashu, please submit the exact question for getting a response by admin. Thanks


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Aashu (14 years ago)

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