Answer is CORRECT (Question: 107813.0 )

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This topic is not avialable

Aman Shergill

· started a discussion

· 1 Months ago

Answer is CORRECT (Question: 107813.0 )

This is UNIT DIGIT calculation so we have to calculate only unit digits :

As you all know

0,1,5 & 6 gives same unit digit whatever power is. So simply

1+1-6-5-6+9

1+1+9= 11 take only unit digit = 1

now we are supposed to subtract negative digits from positive one ,

so add negative digit

6+5+6=17 so take only 7

so we must subtract Negative digits from Positive Number

1-7 since we cannot subtract 7 from 1 so we'd borrow 1 from 10th digit

so it would be 11-7 = 4

That is your Answer

Hope its clear to all NOW

Question:

The unit digit of [(731)¹⁰² + (251)⁷²⁵ – (106)¹⁰⁰+(705)³⁵ – (16)⁴ + 188] is:

Options:

B) 3

C) 5

D) 6

Solution:

Ans: (b) Unit digit in [(731)¹⁰² + (251)⁷²⁵ – (106)¹⁰⁰+ (705)³⁵ – (16)⁴ + 188]

= [1 + 1 – 6 + 5 – 6 + 8]

= (1+1-6+5-6+8) = (15-12) =3

praveen kumar meena

· commented

· 1 Months ago

Yet to be approved!

AAK

· commented

· 1 Months ago

GOOD BRO

nonagerian

· commented

· 1 Months ago

wow that was much better solution

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
Your solution is also good :)
Best Wishes
Team Toprankers

Dipak Sahni

· commented

· 1 Months ago

right bro

Abhishek patel

· commented

· 1 Months ago

why you take 11 and in second case you take only a single digit 7 answer is not cleared

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