Question
If total number of factors of 2,520 is 'y', then find
the value of (y - 4)(y + 6).Solution
Factors of 2,520 = 2³ × 3² × 5¹ × 7¹ So, total number of factors = (3 + 1)(2 + 1)(1 + 1)(1 + 1) = 4 × 3 × 2 × 2 = 48 y = 48 Required value = (y - 4)(y + 6) = (48 - 4)(48 + 6) = 44 × 54 = 2376.
How many persons are sitting between person R and person T?
Eight persons D, E, F, G, H, I, J and K sit in a linear row. All of them face south. I sits third to the right of J. D sits second to the left of J. Th...
How many persons are sitting around the circular table?
Who is third to the left of S?
Four of the following five are alike in a certain way and hence form a group. Who among the following one does not belong to the group?
Who is the husband of V?
Statements: P < Q; C = D; Q >Z ≥ C
Conclusions:
I. P < C
II. Z = D
Who stays in Chandigarh?
If O is related to L and M is related to N in a certain way. Then, who among the following is related to R?
How many seats are there around the table?
