Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 662 - 668 of 987
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Question 662
Question 663
Question MCQ▾
If the angles of a triangle are in the ratio 1: 2: 7 then the triangle is
Choices
Choice (4) | Response | |
---|---|---|
a. | Right angled isosceles | |
b. | Right angled | |
c. | Obtuse angled | |
d. | Acute angled |
Question 664
Question MCQ▾
Which of the following statement (s) is true?
Choices
Choice (4) | Response | |
---|---|---|
a. | , where a and b are rational numbers | |
b. | Infinite number of rational numbers lie between any two rational number | |
c. | if where ‘a’ is a rational number | |
d. | All a., b. and c. are correct |
Question 665
Question MCQ▾
The triangle formed by and is
Choices
Choice (4) | Response | |
---|---|---|
a. | An obtuse angle triangle | |
b. | An acute angle triangle | |
c. | A right angled triangle | |
d. | All of the above |
Question 666
Question MCQ▾
The mean of 10 observations is 15.8. By error, one observation was noted as -12 instead of 12. Then the correct mean is
Choices
Choice (4) | Response | |
---|---|---|
a. | 25.8 | |
b. | 18.2 | |
c. | 18.5 | |
d. | 5.8 |
Question 667
Question MCQ▾
In a , if , then the right angle is at
Choices
Choice (4) | Response | |
---|---|---|
a. | A | |
b. | C | |
c. | B | |
d. | None of the above |
Question 668
Question MCQ▾
The equation of the line parallel to x-axis is ________.
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |