9. The unit digit in the square of the number 132 is
a) 1 b) 2 c)3 d) 4
10. The ones digit in the cube root of the number 1331 is
a) 1 b) 2 c)3 d) 4
11. Sapna purchased a cycle for Rs. 1000 and sold it for Rs. 1200. Find her gain %
a) 20 b) 10 c) 40 d) 12
12. The ratio of 10m to 1km is
a) 1:10 b) 10:1 c) 1:100 d) 100:1
13. The salary of Manish is Rs. 10,000. His salary got increased by 10%, find the increased salary.
a) 9000 b) 11000 c) 8000 d) 12000
14. Find the length of the side of square whose area is 100 cm'.
a) 5cm b) 10cm c) 100cm d) 4cm
Find the square root of 2.56
16. Sum of two numbers is 95. If one exceeds other by 15. Find the number.
17. Solve: 5t-3 = 3t-5
18. Find: 7x+63
19. Ifm is the cube root of n, then find the value n.
20.
In a regular polygon of n sides, then what is the measure of each internal angle?
Answers
Step-by-step explanation:
9. 132^2 just square the unit digit 2^2 = 4
(d) 4
10. cube root 1331 is 11
(a) 1
11. CP= 1000 SP= 1200
gain = 1200-1000= 200
gain%= gain*100/CP
gain% = 200*100/1000
gain%= 20
(a)
12. 10m/1km
10m/1000m
1:100
(c)
13. increase = 10*10000/100= 1000
increased salary = old salary + increase
10000+1000= 11000
(b)
14. area of square is a^2 where a is the side of the square
a^2= 100 cm^2
a= 10 cm
(b)
15. √2.56 = √(256/100) = √256/√100 = 16/10 = 1.6
16. let the numbers be x and x+15 because one exceeds other by 15
x+x+15= 95
2x= 80
x= 40
thus the numbers are 40 and 55
17. 5t-3=3t-5
5t-3t=-5+3
2t= -2
t=-1
18. if u mean 7x+63=0
then X= -63/7 = -9
19. m is the cube root of n
m^3 = n
20. direct formula
for n sides = 180-(360/n)
hope it helps u
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Answer:
9. d) 4 because 2*2 is 4
10. a) 1 because i dont know why
11. a) 20℅