In the Indian numbering system, one lakh is 1,00,000. One hundred lakhs () equals 1,00,00,000, which is called one crore.
72. ______ is the smallest regular polygon.
(A) Square
(B) Pentagon
(C) Rhombus
(D) Equilateral triangle
Answer:
(D) Equilateral triangle
Explanation:
A polygon must have at least three straight sides to enclose a space. Therefore, an equilateral triangle (3 equal sides) is the smallest possible regular polygon.
73. Perimeter of a rectangle is 100 cm. If its breadth is 15 cm, then length will be
(A) 25 cm
(B) 35 cm
(C) 45 cm
(D) 40 cm
Answer:
(B) 35 cm
Explanation:
Perimeter = . So, . Dividing by 2 gives . Subtracting 15 yields cm.
74. What is the place value of 5 in 25827?
(A) 50
(B) 5000
(C) 1000
(D) 5
Answer:
(B) 5000
Explanation:
In the number 25,827, the digit 5 is in the thousands place. Therefore, its place value is .
75. Compare the fraction 5/9 and 2/3
(A) 5/9 > 2/3
(B) 2/3 = 5/9
(C) 2/3 > 5/9
(D) None
Answer:
(C)
Explanation:
To compare, find a common denominator. is equivalent to . Since is greater than , it means .
