[Ans] (E)
[Question] Calculate the circumference of a circular field whose radius is 7 centimeters.
Options:
(A) 11 π cm
(B) 15 π cm
(C) 1 π cm
(D) 4 π cm
(E) 14 π cm
[CoT] Circumference C is given by
C = 2πr = 2π*7 = 14 π cm

[Ans] (D)
[Question] Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
Options:
(A) 19 1/7 days
(B) 16 1/7 days
(C) 14 1/7 days
(D) 17 1/7 days
(E) 13 1/7 days
[CoT] 1/30 + 1/40 = 7/120
120/7 = 17 1/7 days

[Ans] (E)
[Question]
Which of the following is equal to the average (arithmetic mean) of (y+4)^2 and (y-4)^2?
Options:
(A) x^2
(B) x^2+2
(C) x^2 +12
(D) x^2+21
(E) y^2+16
[CoT] Avg = [(y+4)^2 + (y-4)^2] / 2
Expanding and simplifying, (y^2 + 8y + 16 + y^2 - 8y + 16 ) / 2 = y^2 + 16