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(#M40024304) TCS QUESTION Keep an EYE

There are 6 red balls,8 blue balls and 7 green balls in a bag. If 5 are drawn with replacement. What is the probability atleast three are red!

Asked In TCS Karthika (12 years ago)

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(#M40024307) TCS QUESTION Keep an EYE

A man who goes to work long before sunrise every morning gets dressed in the dark. In his sock drawer he has 6 black and 8 blue socks. What is the probability that his first pick was a black sock, but his second pick was a blue sock?

Asked In TCS Karthika (12 years ago)

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(#M40023694) TCS QUESTION Keep an EYE

how many odd and even numbers are there between 42 and 400??
Find the sum of odd numbers and the sum of even numbers!

Asked In TCS Karthika (12 years ago)

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(#M40023721) TCS QUESTION Keep an EYE

Find the no. of all 6-digit natural no.s such that the sum of their digits is 10 and each of the digits 0, 1, 2, 3 occurs at least once in them.
1.490
2.386
3.520
4.620

Asked In TCS Karthika (12 years ago)

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(#M40023905) TCS QUESTION TCS Keep an EYE

how many arrangements will start and end with a vowel for TOGETHER?

Asked In TCS Karthika (12 years ago)

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(#M40023720) TCS QUESTION Keep an EYE

The remainder when 2^232 is divided by 43 is?
a)1
b)2
c)42
d)41

Asked In TCS Karthika (12 years ago)

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(#M40023739) TCS QUESTION Keep an EYE

How many positive integers less than 450 can be formed using 1,2,5 and 6 for it's digits, with each digit being used only once?

Asked In TCS Karthika (12 years ago)

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(#M40023760) TCS QUESTION Keep an EYE

The number of times 2 occurs in 1000 to 9999.
I came across two methods.
Total 4 digit numbers that we can form is (9*10*10*10)
Total 4 digit numbers that we can form with out 2 is (8*9*9*9)
so 4 digit nos with 2 we can form (9*10*10*10)-(8*9*9*9) = 3168

OR

Number of 2's at units place(1000 to 9999)=900
Number of 2's at tenths place(1000 to 9999)=900
Number of 2's at hundreds place(1000 to 9999)=900
Number of 2's at thousands place(1000 to 9999)=1000

therefore total number of 2's =(900+900+900+1000)=3700

Which is the right method?

Asked In TCS Karthika (12 years ago)

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(#M40022951) TCS QUESTION Keep an EYE

At a Church parking lot there are 100 vehicle spaces, 60 of which are cars, 30 are vans and the remainder are buses. If every vehicle is equally likely to leave, find the probability of a:
a) van leaving first.
b) bus leaving first.
c) car leaving second if either a bus or van had left first.

Asked In TCS Karthika (12 years ago)

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(#M40024528) TCS QUESTION Keep an EYE

Find the last three digits of 2988^678?

Asked In TCS Karthika (12 years ago)

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