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Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.
In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.
Q. If in the group, there are 10 teachers and 58 girls, then what is the number of boys?
- a)300
- b)360
- c)350
- d)370
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Governm...
No. of teachers = x + y = 10
⇒ (x + y)2 = (10)2
⇒ x2 + y2 + 2xy = 100
[Since (a + b)2 = a2 + b2 + 2ab]
No. of students = (x2 + y2) = 58
⇒ 58 + 2xy = 100
⇒ 2xy = 100 – 58
⇒ 2xy = 42
⇒ xy = 42/2
⇒ xy = 21
Now, since (x + y)3 = [x3 + y3 + 3xy(x + y)]
⇒ (10)3 = [x3 + y3 + 3 × 21(10)]
⇒ 1000 = (x3 + y3 + 630)
⇒ 1000 – 630 = (x3 + y3)
⇒ (x3 + y3) = 370
Most Upvoted Answer
Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Governm...
370
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Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.Q. If in the group, there are 10 teachers and 58 girls, then what is the number of boys?a)300b)360c)350d)370Correct answer is option 'D'. Can you explain this answer?
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Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.Q. If in the group, there are 10 teachers and 58 girls, then what is the number of boys?a)300b)360c)350d)370Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.Q. If in the group, there are 10 teachers and 58 girls, then what is the number of boys?a)300b)360c)350d)370Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.Q. If in the group, there are 10 teachers and 58 girls, then what is the number of boys?a)300b)360c)350d)370Correct answer is option 'D'. Can you explain this answer?.
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