NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 854 - 860 of 1483
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Question 854
Question MCQ▾
An aero plane at an altitude of 150 m observes the angles of depression of opposite points on the two banks of a river to be and . The width of the river is ________.
Choices
Choice (4) | Response | |
---|---|---|
a. | 180.6 m | |
b. | 236.7 m | |
c. | 245.9 m | |
d. | 98.2 m |
Question 855
Question MCQ▾
In a single throw of two dice, the probability of getting a sum of 7 is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | All of the above |
Question 856
Question MCQ▾
The probability for a randomly selected number out of 1, 2,3, 4, … . , 30 to be a prime number is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 857
Question MCQ▾
A man walks a distance 24 km in given time. If he walks 1 km/hr faster, he will perform the journey 2 hrs before. Find his normal rate of walking.
Choices
Choice (4) | Response | |
---|---|---|
a. | 3 km/hr or -4 km/hr | |
b. | 3 km/hr | |
c. | -4 km/hr | |
d. | All of the above |
Question 858
Question MCQ▾
In the following figure . Then x = ________.
Choices
Choice (4) | Response | |
---|---|---|
a. | 18 cm | |
b. | 21 cm | |
c. | 16 cm | |
d. | None of the above |
Question 859
Question MCQ▾
If are the roots of the equation , then the quadratic equation whose roots are and is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | All of the above |
Question 860
Question MCQ▾
In the figure, D is midpoint of BC and DE is the bisector of and . Then ________.
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |