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A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

🎯 Final Answer: The ratio of the total surface areas of the smaller cubes to the large cube is 25:18. 🎊

February 13, 202550
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From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least 3 men are there on the committee. In how many ways can it be done?

🎯 Final Answer: The total number of ways to form the committee is 756! 🎊

February 13, 202550
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In how many different ways can the letters of the word ‘LEADING’ be arranged in such a way that the vowels always come together?

🎯 Final Answer: The total number of ways the letters of LEADING can be arranged such that the vowels always come together is 720! 🎊

February 12, 202550
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In how many different ways can the letters of the word ‘CORPORATION’ be arranged so that the vowels always come together?

Remember: Group the vowels together as a single "block" or unit.(Treat the vowels as one entity so they always stick together.) Count the remaining units:The number of units to arrange = Total...

February 12, 202550
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Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed?

Remember : We need to select 3 consonants from the 7 available consonants. The number of ways to do this is given by the combination formula (nr)\binom{n}{r}(rn​), where n is the total number and r is...

February 12, 202550
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In how many ways can the letters of the word ‘LEADER’ be arranged?

Quick trick! πŸŽ‰ The word LEADER has 6 letters, with E repeating twice. The number of arrangements is 6!2!=360\frac{6!}{2!} = 360. πŸŽ‰

February 12, 202550
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In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

Quick trick! πŸŽ‰ Total ways to select 4 children from 10 (6 boys, 4 girls): (104)=210\binom{10}{4} = 210 Ways to select 4 girls (no boys): (44)=1\binom{4}{4} = 1 Subtract the no-boy case from the...

February 12, 202550
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How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?

We need to form 3-digit numbers using the digits 2, 3, 5, 6, 7, 9 βœ… Divisible by 5 βœ… No repeated digits Step 1: Check divisibility by 5 πŸ”’ For a number to be divisible by 5, its last digit must...

February 12, 202550
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In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?

Quick Trick: Calculate combinations for men: C(8,5)=56C(8, 5) = 56. Calculate combinations for women: C(10,6)=210C(10, 6) = 210. Multiply the results: 56Γ—210=1176056 \times 210 = 11760. So,...

February 12, 202550
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A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?

Let's solve this step by step in a simple and fun way! πŸŽ‰ Step 1: Identify the given balls βšͺβš«πŸ”΄ The box contains: 2 White balls βšͺβšͺ 3 Black balls ⚫⚫⚫ 4 Red balls πŸ”΄πŸ”΄πŸ”΄πŸ”΄...

February 12, 202550
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In how many different ways can the letters of the word ‘DETAIL’ be arranged in such a way that the vowels occupy only the odd positions?

Let's solve this step by step in a simple way! πŸŽ‰ We need to arrange the letters of DETAIL so that vowels (E, A, I) only occupy the odd positions. βœ… Step 1: Identify vowels and consonants πŸ”€...

February 12, 202550
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In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

We need to form a group of 5 men and 2 women from: 7 men πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨ 3 women πŸ‘©πŸ‘©πŸ‘© Step 1: Choose 5 men from 7 πŸ‘¨β€πŸ’Ό We select 5 men from 7. The number of ways to...

February 12, 202550
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In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

Step 1: Identify the given people πŸ‘¨β€πŸ’ΌπŸ‘©β€πŸ’Ό We have: 7 men πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨πŸ‘¨ 3 women πŸ‘©πŸ‘©πŸ‘© We need to form a group of 5 men and 2 women. βœ… Step 2: Choose 5 men...

February 12, 202550
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How many 4-letter words with or without meaning, can be formed out of the letters of the word, ‘LOGARITHMS’, if repetition of letters is not allowed?

Step 1: Count the total distinct letters The word LOGARITHMS has 10 distinct letters:L, O, G, A, R, I, T, H, M, S (no repetitions). Step 2: Select 4 letters Since we need to form a 4-letter word, we first...

February 12, 202550
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In how many different ways can the letters of the word ‘MATHEMATICS’ be arranged so that the vowels always come together?

Step 1: Identify the vowels and consonants ✨ The word MATHEMATICS has 11 letters πŸ…°οΈπŸ”€ Vowels (🟒): A, E, A, I Consonants (πŸ”΅): M, T, H, M, T, C, S Step 2: Treat the vowels as one unit...

February 12, 202550
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In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together?

The word OPTICAL consists of 7 distinct letters:O, P, T, I, C, A, LIt contains 3 vowels: O, I, A and 4 consonants: P, T, C, L. Step 1: Treating the vowels as a single unit Since the vowels O, I, A must...

February 12, 202550
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