Question
Ratio of the lengths of two trains ‘X’ and ‘Y’
is 5:7 respectively and the ratio of time taken by them to cross a pole is 2:3 respectively. If speed of train ‘X’ is 105 km/h, then find the speed of train ‘Y’.Solution
Speed of Train Y = 105 × (7/3) × (2/5) => 105 × 14/15 = 98 km/h
Find the number of words that can be formed by using all letters of the word 'PAINT', if order of vowels remains same.
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "SEMINAR"?
In a party 19 persons shake hands with every other person. Find the total no of handshakes in the party?
There are 10 members in a delegation which is to be sent at SAARC summit. The total number of members is 18. In how many ways can the selection be made ...
From 6 officers and 8 Jawans, in how many ways can 5 be chosen to include exactly 3 officers?
- How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "MONARCH"?
In how many different ways can the letter of the word ‘STRONG’ be arranged?
Find total number of ways in which the word “DEPRESSION” can be arranged.
In how many ways can 12 girls be seated in a row of 50 seats so that no girl sits on the adjacent seat?
In how many different ways can the letters of the word QUANTITY be arranged so that the vowels always come together?
Relevant for Exams:
