(C) one obtuse angle, one right angle and one acute angle
(D) two obtuse angles and one acute angle
Answer:
(A) one obtuse angle and two acute angles
Explanation:
The sum of all angles in a triangle must be exactly 180°. Because an obtuse angle is greater than 90°, the remaining two angles must sum to less than 90°, meaning they both must be acute angles.
42. The digit immediate to the right of ten lakhs shows ____ place.
(A) crore
(B) lakh
(C) ten crores
(D) ten thousand
Answer:
(B) lakh
Explanation:
In the Indian place value system, moving from right to left, the sequence is: ones, tens, hundreds, thousands, ten thousands, lakhs, ten lakhs. Therefore, the place immediately to the right of ten lakhs is the lakh place.
43. The cost price of a cooler is Rs.7500 and the loss is Rs.750. The selling price of the cooler is
(A) Rs.6570
(B) Rs.6750
(C) Rs.8250
(D) Rs.8520
Answer:
(B) Rs.6750
Explanation:
Selling Price (SP) is calculated by subtracting the loss from the Cost Price (CP). Thus, .
44. In a class of 60 students, 60% are girls. There are ____ boys in this class.
(A) 24
(B) 36
(C) 45
(D) 55
Answer:
(A) 24
Explanation:
If 60% are girls, then the remaining 40% must be boys. students is calculated as boys.
45. A ray ____
(A) does not extend in any direction at all
(B) extends endlessly in only one direction
(C) extends endlessly in two directions
(D) has two definite end points
Answer:
(B) extends endlessly in only one direction
Explanation:
In geometry, a ray is a part of a line that has a single fixed starting point (endpoint) and extends infinitely in the other direction.
