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# 230 + 230 + 230 + 230 =a)8120b)830 c)232 d)230 e)226Correct answer is 'C'. Can you explain this answer? Related Test: Problem Solving Practice Quiz - 1

## UPSC Question

By Balwinder Singh · Apr 16, 2020 ·UPSC
4 (2^30) = 2^2 ×2^30 = 2^32

Sneha Music answered Jul 24, 2020 Anushka Mehra answered May 28, 2020
I can't understand it

Nancy Redhu answered Jul 31, 2020 C is correct

Rangam Kumarranga answered 3 weeks ago
2^30(1+1+1+1)=2^30(2^2)

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

Arsh Bhangu answered May 12, 2020
D

Sakshi Giri Sakshi answered Jul 29, 2020
C

Deepa Choudhary answered 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 answered 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

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

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.

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

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

Thiraviyam Ramakrishnan answered 3 weeks ago
Right ans is 'b'

Faisal Iqbal Shaikh answered Jul 22, 2020
B

Rachit Jaiswal answered 3 weeks ago
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

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

Swapna Bathini answered 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)

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

The ans is C

Prity Kumari answered 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

Shamitha Sivakumar answered 4 weeks ago

Kuldeep Bairagi answered 3 weeks ago
Ans is (a)

Sristi Singh Rajput answered Apr 19, 2020
C is right

2³⁰+2³⁰+2³⁰+2³⁰
= 2³⁰×( 1+1+1+1)
= 2³⁰×4
=2³⁰×2²
=2³²

Pragati Pathak answered Apr 30, 2020

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

Neeraj Barsiwal answered Jun 18, 2020
Vobdmas rule use there

Sidharth Gupta answered Mar 26, 2020
B is right one

Davinderkaur Davinderkau answered Jul 29, 2020
A is right ans

4×2^30=2^2×2^30=2^(2+30)=2^32

Saili Shende answered 4 weeks ago
=2^30(4)
=2^30(2^2)
=2^30+2
=2^32

Manjeer Singh answered Jul 29, 2020
8^120

Prashant Shitole answered Jul 24, 2020
B is right

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

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

Sanjay Kumar answered Aug 01, 2020
2^32

Bhargavi Satish answered Aug 27, 2020
2^30×2^2
2^32

Jyoti Kumari answered 3 weeks ago
A