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ECAT → Engineering Colleges Admission Test (ECAT) Sample Questions from 16 to 20
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16. Calculate
(A) 2x+h
(B) ln2x+h
(C) ln2 · 2x+h
(D) ln2h · 2x+h
17. What is the remainder when x3–5x2+2x+11 is divided by x–2.
(A) 3
(B) –3
(C) 2
(D) –2
18. If one root of the polynomial x3–7x+6=0 is 2. What are the other two roots?
(A) 1 and –1
(B) 1 and –2
(C) 1 and –3
(D) 1 and –4
19. If α, β are the roots of 3x2–2x+4=0, then what is the value of
(A) 1
(B) 1/2
(C) 1/4
(D) 2
20. Which from the following is NOT closed under multiplication?
(A) {0}
(B) {0,1}
(C) {–1,0}
(D) {–1,1}
ANSWERS: ECAT SAMPLE QUESTIONS
16. C
17. A
18. C
19. B
20. C