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7power2n+2the whole power 3n-3×3the whole power n-1 is divisible by 25
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asked
Dec 15, 2018
in
Class XI Maths
by
Yagngna
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16
points)
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vote
0
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For how many positive integral values of N are both n/3 and 3n three-digit whole numbers?
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Jul 15, 2018
in
Class VIII Maths
by
Aman Chaurasia
(
-15
points)
+1
vote
0
answers
For how many positive integral values of N are both n/3 and 3n three-digit whole numbers? (a) 33 (b) 27 (c) 21 (d) 33
asked
Jul 17, 2018
in
Class VIII Maths
by
Aman Chaurasia
(
-15
points)
0
votes
1
answer
If A = {x: x is natural number divisible by 2 and x< 16} and B = {x:x is a whole number divisible by 3 and x < 18}, find : n(A)
asked
Jun 7, 2019
in
Class VII Maths
by
navnit40
(
-4,939
points)
set concepts (some simple divisions by vedic method)
0
votes
1
answer
If the sum of n terms of an A.P. is given by Sn = 3n + 2n2, then the common difference of the A.P. is
asked
Feb 20, 2018
in
Class XI Maths
by
vijay
Premium
(
539
points)
sequence and series
+1
vote
2
answers
Show that one and only one out of n, n+2, n+4 is divisible by 3
asked
Oct 31, 2017
in
Class XI Maths
by
aditya23
(
-2,151
points)
0
votes
1
answer
If P = {x : x < 3, x e N}, Q= {x : x≤2,x ∈ W}. Find (P∪ Q) x (P∩ Q), where W is the set of whole numbers.
asked
Feb 16, 2018
in
Class XI Maths
by
vijay
Premium
(
539
points)
relations and functions
0
votes
1
answer
The sum of n 2n 3n terms of an AP are S1 S2 S3 respectively. Prove that S3=3(S2-S1).
asked
Nov 7, 2017
in
Class X Maths
by
aditya23
(
-2,151
points)
0
votes
1
answer
A five-digit number divisible by 3 is to be formed using the numbers 0, 1,2,4, and 5 without repetitions.
asked
Feb 19, 2018
in
Class XI Maths
by
rahul152
(
-2,838
points)
permutations and combinations
0
votes
1
answer
4n – 1 is divisible by 3, for each natural number .
asked
Feb 17, 2018
in
Class XI Maths
by
nikita74
(
-1,017
points)
principle of mathematical induction
0
votes
1
answer
Evalaute: X5+n(x2)3n+1/x7n-2
asked
Apr 29, 2019
in
Class VIII Maths
by
priya12
(
-12,634
points)
exponents(powers)
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