15
Q:

Simplify 2392-21+8-72=?2

 

A) 4 B) 5
C) 6 D) 9

Answer:   C) 6



Explanation:

?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6

Subject: Simplification
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Q:

Factors of  x2 + 7x + 10 are

A) (x-5)(x-2) B) (x+5)(x+2)
C) (x-5)(x+2) D) (x-4)(x+2)
 
Answer & Explanation Answer: B) (x+5)(x+2)

Explanation:
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0 239
Q:

The value of cos0 deg is

A) 0 B) infinite
C) not defined D) 1
 
Answer & Explanation Answer: D) 1

Explanation:
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0 217
Q:

If a/b = 1/4, b/c = 1/8 and a = 2 then the value of c is -

 

A) 8 B) 16
C) 32 D) 64
 
Answer & Explanation Answer: D) 64

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1 4461
Q:

The value of (0.00000729/0.00000027) is

A) 0.27 B) 0.027
C) 2.7 D) 27
 
Answer & Explanation Answer: D) 27

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0 241
Q:

If √5 = 2.236, then √5/2 is

A) 1.851 B) 1.118
C) 2.236 D) 1.782
 
Answer & Explanation Answer: B) 1.118

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0 234
Q:

If 2x + 3 = 9 then find the value of 3x + 2

A) 12 B) 16
C) 13 D) 11
 
Answer & Explanation Answer: D) 11

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1 267
Q:

In ∆PQR measure of angle Q is 90 deg. If cosecP = 17/15, and PQ = 0.8cm, then what is the length (in cm) of side QR?

 

A) 1.7   B) 2  
C) 2.5   D) 1.5
 
Answer & Explanation Answer: D) 1.5

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0 7764
Q:

If tanα= 2 + 1, then the value of tanα - cotα is

 

A) √2 - 1 B) 2√2
C) 2 D) 1
 
Answer & Explanation Answer: C) 2

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2 3543