total number of co-primes of 200 lying between 1-100 is ?
Easy hai..but I am confused between 40 &39..
Puys, not exactly a quant question, want to know the approach .
There are 10 women waiting outside for the post of secretary and there is only 1 vacancy. I have to interview them one by one and tell them yes or no then and there. If I tell someone yes, I cant interview others and if I tell someone No, i cant take her back. So suggest me how to go about.
TIA
How many 5 digit numbers exist having exactly two 4's in them.
The jailor of XYZ jail had 6 fruits 3 Oranges,2 apples and one pineapple.Four prisoners 101,102,103 and 104 are lined up one behind the other,the jailor helps them put the fruit on their head so that they can't see the fruit kept on their head.Prisoner no. 101 can see fruit on the head of 102,103 and 104.Prisnor no. 102 can see fruit on 103 and 104.103 can see fruit on 104.104 can't see any of the fruits.when jailor asks them to tell the name of fruit kept on their head. No one replied.
What was the fruit kept on prisoner no. 104?
A)Orange
B)Apple
C)Pineapple
D)data inadequate
An intelligence agency decide on a code of two digits selected from 0,1,2...till 9 but the slip on which the code is handwritten allows confusion between the top and bottom because these are indistinguishable. Thus for example 81 could be confused with 18 how many codes are there such that there is no possibility of any confusions. Options 25 75 80 70 none
A player rolls a die and receives the same number of rupees as the number of dots on the face that turns up. What should the player pay for each roll if he wants to make a profit of one rupee per throw of the die in the long run?
a)3.5 b)2.5 c)2 d)4
For a certain n, the expression:
3^n + 3^(n-1) + 3^(n-2) + 3^(n-3) + 3^(n-4) has 5178 positive divisors, then what is the value of n mod 100?
How many 5 digit perfect squares are possible where last two digits are same but non zero?
There are 21 marbles of which 10 are white colored and are identical to each other and each of the remaining 11 are each differently colored marbles, one of them being orange colored and one being mauve colored. In how many ways can the 21 marbles be arranged in a row such that there are exactly 5 marbles between the orange and mauve colored marble?
- None of These
- 30*21!/10!
- 3019C910!
- 3019C1011!
- 30*19!/10!
0 voters
There are 5 blue socks, 4 red socks and 3 green socks on a wardrobe. A child has to select 4 from this set. In how many ways can he do so?
How many numbers are co-prime to 2304 and lie between 1000 and 2000?
x,y,z have a sum of 30.All of them are non negative integers. If any two variables don't have the same value and exactly one variable has a value less than or equal to three, then find the number of possible solutions.
a)98
b)285
c)68
d)294
PS: my answer (252)
was not in options...I guess the correct answer is not given in options of the book
The sum of four consecutive two-digit odd
numbers, when divided by 10, becomes a perfect square.
Which of the following can possibly be one of these four numbers? (CAT 2006)
A.25
B.67
C.41
D.73
E.21
A gadha never lives up to 100 years because its stupidity gets it killed. Dhondu and Bhondu are the cutest gadhas in Donkeyland. When you write Dhondu's age followed by Bhondu's age, you get a four-digit perfect square. After 31 years, if you write their ages in the same order you again obtain a four-digit perfect square. How old is Dhondu?
A.20
B.12
C.14
D.10
The product of the ages of some teenagers is 10584000. The sum of their ages is equal to
A.86 B.88 C.85 D.89 E.87
How many four-digit perfect squares exist which are of the form AB64(A is not equal to B)
A)0 B)1 C)2 D) 3A student wrote 6 three-digit numbers on the board. If he had written the reverses of two of the numbers A and B instead of the actual numbers, the average of the numbers would have been 115.5 less. The sum of the averages of the hundreds and the units digits of A and the hundreds and the units digits that of B is 9.5. Find the sum of the hundreds digits of A and B.
Two horses started simultaneously towards each other and meet each other 3 h 20 min later. How much time will it take the slower horse to cover the whole distance if the first arrived at the place of departure of the speed 5 hours later than the second arrived at the point of departure of the first?
Let S = (3^1 + 3^2+ 3^3+ 3^4+.......... 3^400) - (7^1+ 7^2 + 7^3 + 7^4 +......... 7^201). The last two digits of S are
A. 00 B. 07 C. 43 D. 93