(1/10)18 - (1/10)20 = ?

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(1/10)18 - (1/10)20 = ?..

99/1020

 Is This Answer Correct ? 163 Yes 32 No

(1/10)18 - (1/10)20 = ?..

(1/10)^18 - (1/10)^20
= 1/(10^18) - 1/(10^20)
= (10^2 - 1)/(10^20)
= 99/(10^20)

 Is This Answer Correct ? 90 Yes 17 No

(1/10)18 - (1/10)20 = ?..

-0.2

 Is This Answer Correct ? 88 Yes 34 No

(1/10)18 - (1/10)20 = ?..

1/10 is = 0.1
so (1/10)18=1.8
lly (1/10)20=2.0
so 1.8-2.0=-0.2

 Is This Answer Correct ? 61 Yes 34 No

(1/10)18 - (1/10)20 = ?..

(1/10)18-(1/10)20=18/10-20/10
=(18-20)/10
=-2/10
=-1/5

 Is This Answer Correct ? 29 Yes 14 No

(1/10)18 - (1/10)20 = ?..

If it's the Same Question:
Step 1. (0.1)/18-()/20
Step 2. (0.1)((1/18)-(1/20))
Step 3. 0.1 (10-9)/180 -----------> LCM of 18 & 20 = 180
Step 4. 0.1/180
Step 5. 1/1800 is the Answer
Approx = 0.000557

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If the Question is (0.1)^18-(0.1)^20 then:
Step 1. (10^18/100^18)-(10^20/100^20)
Step 2. (1/10^18)-(1/10^20)
Step 3. 1/10^18(1-1/10^2)
Step 4. 1/10^18(99/100)
Step 5. (99)/(10^20)

 Is This Answer Correct ? 9 Yes 1 No

(1/10)18 - (1/10)20 = ?..

you have typed the ques wrong or from where you copied this
ques that is wrong..
it should be

(1/10)^18 - (1/10)^20

99/(10^20)

 Is This Answer Correct ? 9 Yes 4 No

(1/10)18 - (1/10)20 = ?..

Do you guys really think that any company will ask this
simple maths in aptitude rounds?
Kannans just didn't get this question i guess..he forgot to
mention the whole power thing...or may be didnt know how to
typ it out...So Prabhakar's solution is the correct answer
to the correct question.

 Is This Answer Correct ? 11 Yes 8 No

(1/10)18 - (1/10)20 = ?..

=(0.1)^18-(0.1)^20
=9.9*10^-9
=99/10^20

 Is This Answer Correct ? 10 Yes 8 No

(1/10)18 - (1/10)20 = ?..

-1.2

 Is This Answer Correct ? 0 Yes 0 No

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