Question

Choose the correct option.
1. The number of digits in the square root of 390625 are
(a) 3
(b) 4
(C) 5
2. V27 x V64 is equal to
(d) 6
(a) 6
(b) 9
(c) 8
3. If a + b = 7 and ab = 6, then a² + b² is equal to
(d) 12
(2) 27
(b) 13
(c) 37
(d) 47
4. 27a+b? - (-9ab) is equal to
(b)-3ab?
(c) -3a²b2
(d) -3ab
(a) -3a²b
5. 35% of 600 is
(a) 200
(b) 210
(c)35/6
(d) 120
​

Answer 1

2 and 4 cannot do sorry !

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