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Exponents & Powers

• Exponent is a quantity which represents the power to which a given number or expression is to be raised.

Practice these questions

Quiz for Exponents & Powers

 Q.1 (√4+ √5)2 − (√4− √5)2 = ? a) 8√5 b) 41- 8√5 c) 41 + 8√5 d) 41
 Q.2 If the mean of 3 numbers a, b, c is 6, the find the value of? ∛((5(a+b−c))(5(b+c−a))(5(c+a−b))) a) 5 b) 6 c) 8 d) 56'
 Q.3 Simplify (√2−1)/(√2+1) a) 3/√2 b) 3+2√2 c) √2/3 d) 3-2√2
 Q.4 Simplify (√3+√2)/(√3−√2) a) 5+2√6 b) 5-2√6 c) 1/5 +2√6 d) 5+√6
 Q.5 8.9 × 1024 - 1.9 × 1025 = ? a) 7 x 1025 b) 1.01 x 1025 c) −1.01 x 1024 d) −1.01 x 1025
 Q.6 How many prime factors exists for the following expression 1511 x 77 x 23 a) 30 b) 28 c) 32 d) 34
 Q.7 Simplify (√5+2)/(√5−2) a) 9+4√5 b) 1 / (9 −4√5 ) c) 1 / (9 −4√5 ) d) 9 −4√5
 Q.8 Given the following equations, what is the value of b? 5(a+b)= 3125 and 3125(a+b)=5 , a) ( 15 / 5) b) (10 / 5) c) ( 11 / 5 ) d) (12 / 5)
 Q.9 What is the value of (52006 x 32010 ) / 152008 a) (45 / 258) b) ( 81 / 625) c) ( 8 / 65) d) ( 9 / 25)
 Q.10 1/2(−2) x 2/3(−3)=? a) (16 / 9) b) ( 4 / 81) c) (27 / 2) d) ( 4 / 27)