if ‘n’ is an odd integer then show that n2 – 1 is divisible than 8 ?
Kushal Jain , 9 Years ago
Grade 10
10 grade maths> if ‘n’ is an odd integer then show that n...
1 AnswersNicho priyatham
Last Activity: 9 Years ago
any odd integer n=2k+1(say)k= integer
now n2-1=(n-1)(n+1)
=2k(2k+2)=4k(k+1)
now product of any 2 concutive numbers is divisible by 2
so4k(k+1) is divisible by 8
PLZ APPROVE IF useful and incase of any doubts ask in ans box
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free
Enter text here...
Other Related Questions on 10 grade maths
What are the advantages and disadvantages of mean, median and mode?
10 grade maths
1 Answer Available
Last Activity: 1 Year ago
Find the sum of the first 100 natural numbers.
10 grade maths
1 Answer Available
Last Activity: 2 Years ago
AOBC is a rectangle whose three vertices are A(0,-3), O(0,0) and B (4,0). The length of its diagonal is__
10 grade maths
1 Answer Available
Last Activity: 2 Years ago
For an AP, it is given that first term (a)= 5 and Common Difference (d) = 3 and nth term = 50. Find n and sum of first n terms of AP
10 grade maths
1 Answer Available
Last Activity: 2 Years ago
The value(s) of k for which the quadratic equation 2x^2 + kx + 2 = 0 has equal roots, is (a) 4 (b) pm 4 (c) -4 (d) 0
10 grade maths
1 Answer Available
Last Activity: 2 Years ago