Question
How many 4-digit numbers can be formed from digits 1–9
(no repetition) such that the number is divisible by 3?Solution
Sum of digits of number must be multiple of 3. Total 4-digit numbers (without repetition) = 9×8×7×6 = 3024. ⅓ of them will have digit-sum divisible by 3 (uniform distribution). Answer: 3024 / 3 = 1008
- Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
... 1. During the science
P. lab, the students
Q. was gooey enough
R. to stick to the
S. created a glutinous mixture that
6. walls when thrown.
In the questions given below, a sentence has been broken down into four fragments labelled (A), (B), (C) and (D) and arranged, not necessarily in the c...
Given that 1 is the first sentence, which of the following will be the FOURTH sentence after rearrangement?
Which of these should be the FIFTH sentence after rearrangement?
What sentences should come 5th in the paragraph?
Choose the appropriate option to arrange the sentences in the correct order to form a meaningful paragraph.
1-Five men entered Ram’s house toda...
Given below are five jumbled sentences. Select the option that gives their correct logical sequence.
A: Unemployment is a state where individu...
Which of the following is the fourth sentence of the passage?
(a) From a dedicated space for book lovers, the Visakhapatnam Public Library today ...
Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order.
A. As he looked at them, their head...
