Once teacher in the class wrote 25 on the blackboard She called Rita to subtract 1 from 25 25 -1 = 24 Then Ajay was called to subtract 3 from 24 24-3=21 Neetu subtracted 5 from 21 21-5=16 Ashok subtracted 7 from 16 16-7-9 Finally Jiya subtracted 9 from 9 9-9=0 From 25 they had subtracted successive odd numbers starting from 1 and obtained 0 at 5th step Teacher told students to find square of 5,5² = 25 So as per definition 5 is square root of 25.
(i) In how many steps the successive odd numbers are to be subtracted from 49 to get 0?
a) 7
b)9
c) 5
d) 6
ii) What is the square root of 64?
a) 8
b) 9
c) 5
d) 7
iii) What is the square of 10?
a) 90
c) 70
b) 100
d) 80
(iv) 9-1=8,8-3=5,5-5=0 tells that 3 is square root of _______.
v) In 9 steps the successive odd numbers are to be subtracted from 80 to get 0.
b) False
a) True
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Answer:
1) 7
2) 8
3) 100
4) 9
5) false
Answer:
1=)7
2=)8
3=)10
4=)9
5=)False