CAT Quant Practice Problems

Question: There are six boxes numbered 1, 2, 3, 4, 5, 6. Each box is to be filled up either with a white ball or a black ball in such a manner that at least one box contains a black ball and all the boxes containing black balls are consecutively numbered. The total number of ways in which this can be done equals.
  1. 15
  2. 21
  3. 63
  4. 64

Correct Option:2

CAT 2019 Online Course


CAT Quant Questions with Video Solutions


CAT Quant Practice Problems
4.6 (92%) 15 votes