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Q:

326-3-436-2-68-12=?

A) sqtr{3}-sqrt{2} B) sqtr{3}+sqrt{2}
C) 5sqrt{3} D) 1
 
Answer & Explanation Answer: C) 5sqrt{3}

Explanation:

Given Exp = 326-3×6+36+3-436-2×6+26+2-622-3

 

32(6+3)6-3-43(6+2)6-2+33-2×3+23+2

 

26+3-36+2+33+2

 

12+6-18-6+33+32

 

= 53 

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Q:

(0.75)31-0.75+0.75+0.752+1 = ?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:

(0.75)31-0.75+0.75+(0.75)2+1=(0.75)3+(1-0.75)(1)2+(0.75)2+1×0.751-0.75 

 

 

(0.75)3+(1)3-(0.75)31-0.75 =10.25=4=2

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Q:

 0.204×420.07×3.4 is equal to:

A) 1/6 B) 0.06
C) 0.6 D) 6
 
Answer & Explanation Answer: D) 6

Explanation:

0.204×420.07×3.4=8568238=36 =6

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Q:

The value of 80-11245-63 is:

A) 3/4 B) 4/3
C) 4/7 D) 7/4
 
Answer & Explanation Answer: B) 4/3

Explanation:

80-11245-63=16×5-16×79×5-9×7=45-4735-37

 

=45-735-7=43

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Q:

If 18225=135, then the value of 182.25 +1.8225+0.018225+0.00018225  is:

A) 1.49985 B) 14.9985
C) 149.985 D) 1499.85
 
Answer & Explanation Answer: B) 14.9985

Explanation:

Given exp = 18225102+18225104+18225106+18225108

 

               = 1822510+18225102+18225103+18225104

 

               = 13510+135100+1351000+13510000

 

               = 13.5+1.35+0.135+0.0135=14.9985

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Q:

1.52 x 0.0225 = ?

A) 0.0375 B) 0.3375
C) 3.275 D) 32.75
 
Answer & Explanation Answer: B) 0.3375

Explanation:
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Q:

Simplyfiy : 314÷114-12212-14+16

A) 78 B) 88
C) 98 D) 108
 
Answer & Explanation Answer: A) 78

Explanation:

Given exp =134÷54-1252-3-212134÷54-1252-112

 

134÷54-1230-112 = 134÷54-2924

 

 = 134÷30-2924=78

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Filed Under: Simplification

Q:

If logaab = x, then logbab = ?

A) 1/x B) x/(x+1)
C) x/(1-x) D) x/(x-1)
 
Answer & Explanation Answer: D) x/(x-1)

Explanation:
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Filed Under: Logarithms