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ROUND 1: PRELIMINARY/SELECTION

Authored by Al Grg

Other

9th Grade

Used 9+ times

ROUND 1: PRELIMINARY/SELECTION
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39 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(-∞, ∞) b. (0,1)

(0,1)

(-1,1)

a. (- π ≤ x ≤ π)

Answer explanation

The domain of the function sin-1x is (-1,1), as the range of sin(x) is -1 to 1, and the inverse function sin-1x will have a domain of (-1,1).

2.

OPEN ENDED QUESTION

3 mins • 1 pt

15 minutes to answer as many questions as possible. Top 2 groups from each set of 6-group competition will be selected for Round 2 onwards according to leaderboard score calculated by the application.

Evaluate responses using AI:

OFF

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If A⊂B and B⊂C then (A∩B)∪C is ___.

A

B

C

none of these

Answer explanation

The correct answer is C because the union of (A∩B) and C includes all elements in C, which is the superset of A and B.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(2,1)

(2, -1)

(2,3)

(2, -3)

Answer explanation

To find the vertex of the quadratic equation x^2 - 4x + 3 = 0, use the formula x = -b/2a. In this case, x = -(-4)/2(1) = 2. Substituting x=2 back into the equation gives y = 2^2 - 4(2) + 3 = -1. Therefore, the vertex is (2, -1).

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

संयुक्त राष्ट्रसङ्घको स्थापना कहिले भएको हो? Ans.:________

सन् १९४५ अक्टोबर २४

सन् १९४४ अक्टोबर २४

सन् १९५४ अक्टोबर २४

सन् १९४५ अक्टोबर २९

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

चट्याङको देश भनेर कुन सार्क मुलुकलाई चिनिन्छ?

Ans.: ___________

Bhutan

Bangladesh

Nepal

Bangalore

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

मानिसको वैज्ञानिक नाम के हो?

Ans.: _____________

होमोसेपियन्स

निएन्डरथल

चिम्पान्जी

ओराङ्गुटान

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