41. Which of the following represent ‘one crore’?
(A) 1,00,000
(B) 10,00,000
(C) 100,00,000
(D) 10,00,00,000
Answer:
(C) 100,00,000
Explanation:
In the Indian numbering system, one crore is equal to one hundred lakhs, which is written with a ‘1’ followed by seven zeros: 1,00,00,000.
42. Jhansi took a loan from bank to buy log boat. She paid back a total of Rs. 37,800 one year. How much did she pay back every month?
(A) 3,250
(B) 3,150
(C) 3,780
(D) 3,870
Answer:
(B) 3,150
Explanation:
There are 12 months in a year. To find the monthly payment, divide the total amount by 12: .
43. Angles are measured with the help of a ________
(A) Compass
(B) Divider
(C) Protractor
(D) Ruler
Answer:
(C) Protractor
Explanation:
A protractor is a transparent plastic mathematical instrument, typically semicircular, used specifically for measuring and drawing angles in degrees.
44. 1/3 of a right angle is equal to
(A) 30°
(B) 60°
(C) 90°
(D) 45°
Answer:
(A) 30°
Explanation:
A right angle is exactly 90°. One-third of a right angle is calculated as .
45. Length of the boundary of a figure is called:
(A) Perimeter
(B) Area
(C) Volume
(D) Circumference
Answer:
(A) Perimeter
Explanation:
In geometry, the perimeter is the total continuous length of the outside boundary of any closed two-dimensional shape.
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