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Mathematics → SAT Math Level-2 → Practice Test Questions from 16 to 20

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16. What is the value of ‘a’ if

is a singular matrix.
(A) 0
(B) 1
(C) –1
(D) 12
(E) –12

17. What is the value of x if 4^x = ¹/₂
(A) 1
(B) –1/2
(C) 1/2
(D) –1/4
(E) 1/4

18. If the 5^th term of an arithmetic progression is 17 and the 9^th term is 37. What is the 1^st term?
(A) –6
(B) –3
(C) 0
(D) 3
(E) 6

19. Find the value of

(A) 1
(B) –1/2
(C) 1/2
(D) –1/4
(E) 1/4

20. tan^–1x + cot^–1x = ?
(A) 0^o
(B) 45^o
(C) 60^o
(D) 90^o
(E) 180^o

ANSWERS: SAT MATH LEVEL-2 PRACTICE TEST QUESTIONS
16. E
17. B
18. B
19. C
20. D