Easy One-
A number when divided by 36 leaves a remainder 9.What could be the remainder when it is divided by 45?
- 15
- 18
- 21
- 24
0 voters
Consider all possible 8-digit binary strings having four 1s and four 0s. What is the sum of all such numbers? (Note:- a string can have a leading 0)
- 8925
- 7825
- 8664
- 9012
- 5625
0 voters
Let f(n) denote the square of the sum of the digits of n. Let f ^2(n) denote f(f(n)), f ^3(n) denote f(f(f(n))) and so on.
Then f 1998(11) = ??
- 16
- 49
- 256
- 169
0 voters
fn ={ 2^n-1 + 1, n is odd
2^n-1 - 1,n is even
find remainder when f1+ f2 + f3....f100 is divided by 127
- 3
- 0
- 91
- 126
0 voters
Let x be the smallest integer such that the number N = (16^x) (5^800) has 805 digits. Then the sum of digits of N is
- 19
- 11
- 4
- 25
0 voters
All possible pairs are formed from the divsors of 21600. How many such pairs have a HCF of 45??
- 276
- 8
- NOT
- 49
- 34
0 voters
find the 2nd term of an AP. If sum of first 5 even terms is 15 and sum of 1st 3 terms is -3.
plz provide the solu.
- 1
- 0
- -1
- -2
- -3
0 voters
K is a 3 digit number such that ration of the no. to the sum of its digit is least. What is the diff between hundredth and tenth digits of the number.
- 8
- 9
- 7
- non of these
0 voters
28383rd term of 1234567891011121314.......
- 3
- 4
- 9
- 7
0 voters
What will be the last 2 digits?
(10^3+9^3)^1000 / 12^3
- 35
- 25
- 65
- 45
- 85
0 voters
Find the smallest possible integer n for which (2^2-1)(3^2-1)(4^2-1).....(n^2-1) is a perfect square.
With explanation please....
- 8
- 6
- 2
- 4
0 voters
two digits selected from 0,1,2,3,4,5,6,7,8,9.slip on which code is handwritten allows confusion b/w top n bottom coz dey r indistinguishable.e.g 91 can be confused with 16. how man codes are there such dat there is no possibility of any confusion ?
- none
- 25
- 75
- 80
0 voters
Find the sum of terms in the series : 3,11,14,25,........upto 1851,2995
A boy multiplies 987 by a certain number beginning with 5 and obtains 559981 as his answer.If in the answer ,both 9's are wrong,correct answer will be
- 555681
- 553681
- 556681
- 555181
0 voters
Let S denote the sum of three natural numbers. Let D denote the sum of the products of them taken two at a time. Let P denote their product. If 3S + D = 2P, how many combinations are there for the numbers?
- 7
- 3
- 6
- 5
- None of the above
0 voters
What is the remainder when 3^1001 is divided by 1001??
find the base of the number system if 14,31,62 forms GP in that system
- B)8
- C)9
- D)10
- E)none of these
- A)7
0 voters
Which of the following are factors of 3^259 + 2^296?
(i) 16
(ii) 349
(iii) 2443
- i & iii
- ii & iii
- iii
- all
0 voters
2^156 divided by 13 ,remainder is??
- 1
- 11
- 6
- none
0 voters
a+b+c=3
a^2+b^2+c^2=5
a^3+b^3+c^3=7
a^2+b^2+c^2=5
a^3+b^3+c^3=7
find a^4+b^4+c^4