MBA Exam

A = {1, 4, 7, 10, ..., 2004th term}
B = {9, 16, 23, 30, ..., 2004th term}If , how many elements are there in S?pls explainn.

1) 3722
2) 3732
3) 3914
4) 3924

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MBA Other Question
Consider all possible 8-digit binary strings having four 1s and four 0s. What is the sum of all such numbers? (Note:- a string can have a leading 0)

1) 8925
2) 5625
3) 9012
4) 8664
5) 7825
 A mixture contains liquid A and B in the ratio 3 : 7. If 40 liters of the mixture is taken out and replacedwith another liquid C, concentration of the liquid ‘A’ in the final mixture becomes 20%. What is thequantity of liquid ‘B’ in the final mixture?(A) 24 liters (B) 72 liters (C) 42 liters (D) 70 liters (E) 56 liters

1) a
2) b
3) c
4) d
5) e