Question

3.
Which one of the following numbers is a perfect square?
(a) 20 (b) 40 (c) 80 (d) 90
2. The square of is 10
(a) 10 (b) 20 (c) 50 (d) 100
The unit digit of the square number 81 is
(a) 0 (b) 1 (c)2 (d) 3
Which of the following are in inverse proportion?
a) The time taken for a journey and the distance travelled in
uniform speed.
b) The population of a country and the area of land per perso
c) Area of cultivated land and the crop harvested.
4
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Answer 1

Answer:

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