230 + 230 + 230 + 230 =
  • a)
    8120
  • b)
    830 
  • c)
    232 
  • d)
    230 
  • e)
    226
Correct answer is 'C'. Can you explain this answer?

UPSC Question

Saad Saad
Nov 08, 2018
4 (2^30) = 2^2 ×2^30 = 2^32

Sneha Music
Jul 24, 2020

Anushka Mehra
May 28, 2020
I can't understand it

Rangam Kumarranga
Sep 16, 2020
2^30(1+1+1+1)=2^30(2^2)

=2^32
hence the option for that question is c

Romeo Das
Nov 23, 2020
4(2^30)=2^2×2^30=2^32

Deepa Choudhary
Aug 17, 2020
Yes the correct option is C i.e 2^32 as 2^30+2^30+2^30+2^30=2^30×(1+1+1+1)=2^30×4
2^30×2^2= (2)^30+2=2^32..
Hope u understand it....

Sandeep Kumar
Jul 02, 2020
4×(2^30)=2^2×2^30
= 2^32

* In multiplication if base are equal we can add powers

* In division if base are equal we can subtract the powers

example:

3^5/3^3 = 3^(5-3)= 3^2

Kumar Adit
Sep 18, 2020
Answer is 'B' because if base or exponent are same then add base and make exponent common for whole so answer would be 8 to the power 30.

Bhavishay Gujjar
Jul 23, 2020
2^30(1+1+1+1)
=2^30*(4)
=2^30*(2*2)
=(2^30)*(2^2)
=2^32

Chhavi Tripathi
Jun 21, 2020
Aap aise question kaha se late ho , please tell me.

Sher Singh
Jul 19, 2020
2^30+2^30+2^30+2^30 = 4×2^30 = 2^2 × 2^30 = 2^32

Rachit Jaiswal
Sep 09, 2020
2^30 + 2^30 + 2^30 + 2^30

2^30(1+1) + 2^30(1+1)

2^30(2^1) + 2^30(2^1)

2^32

Sharukhan Kd
Nov 07, 2020
2^30(1+1+1+1) =4×2^30=2^2×2^30=2^32

Swapna Bathini
Jul 30, 2020
4(2^30)=(2^2)(2^30)=2^2+30=2^32
when the bases are equal,we can add the powers(exponents)

Ssssssss Ddd
Jun 21, 2020
4(2^30)=2^2 * 2^30 =2^(30+2)= 2^32

Janvhi Bachhav
Aug 29, 2020
How could this plz explain it

Prity Kumari
Jul 08, 2020
2^30+2^30+2^30+2^30

2^30(1+1+1+1)

2^30×4

2^30×2^2 since, (a^m+a^n=a^m+n)

2^30+2

2^32 ans.

4(2^30) = 2^2(2^30)=2^(2+30)=2^32

Pragati Pathak
Apr 30, 2020
How? plz find this answer..

Punam Pradhan
Jul 29, 2020
2³⁰+2³⁰+2³⁰+2³⁰
= 2³⁰×( 1+1+1+1)
= 2³⁰×4
=2³⁰×2²
=2³²

Hemaanshu Ranjan
Nov 24, 2020
Take 2³⁰ common..its give you....2³⁰(1+1+1+1) add the you get 4*2³⁰and open 4 we get 2²*2³⁰ we know that .if the base are same in multiplication we can add their power.....then it becomes 2³² is an answer...

Neeraj Barsiwal
Jun 18, 2020
Vobdmas rule use there

Rakesh Quinton
Jul 27, 2020
Is it not 'd' the right answer

Saili Shende
Sep 03, 2020
=2^30(4)
=2^30(2^2)
=2^30+2
=2^32

4×2^30=2^2×2^30=2^(2+30)=2^32

Nancy 8130
Oct 05, 2020
(2+2+2+2)^30

so 8^30

Kuldeep Singhal
Jul 22, 2020
4(2^30)=2^2.2^30=2^32...

Chanchal Nishad
Oct 02, 2020
Correct answer is c.

Vijay Billu
Jul 09, 2020
Both option b and c are correct .

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