The total cost of six books, five pencils and seven sharpeners is Rs. 115 and that of eight books, Bissoy Answers

Consider the following events: `E_(1)`: Six fair dices are rolled and at least one die shows six. `E_(2)`: Twelve fair dice are rolled and at least tw

Correct Answer - A `p_(1)`=1-(no die show six ) `1-(((5)/(6))^(6))=0.6651` `p_(2)=1-` ( no die shown two + one die shown two ) `p_(2)=1-[((5)/(6))^(12)+""^(12)C_(1)((5)/(6))^(11)((1)/(6))^(1)]=0.61866` `p_(1) gt p_(2)`

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3 pens and 5 pencils together cost ₹ 35, whereas 5 pens and 3 pencils together cost ₹ 37. The cost of a pencil is ………………

Correct option is (C) ₹ 4 Let cost of 1 pen is Rs x and cost of 1 pencil is Rs y. \(\because\) Cost of 3 pens & 5 pencils is Rs 35. \(\therefore\) 3x...

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3 pens and 5 pencils together cost ₹ 35, whereas 5 pens and 3 pencils together cost ₹ 37. The cost of a pencil is ……………… 2 Answers 1 views

The total cost of six books, five pencils and seven sharpeners is Rs. 115 and that of eight books,

Correct option is (B) Book Let the cost of 1 book, 1 pencil and 1 sharpener is Rs. x, y & z respectively. \(\therefore\) According to given conditions 6x + 5y + 7z = 115 ...

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Total cost of 14 pens and 21 books is Rs. 130 and the total cost of 6 pens and p books is Rs. 90. Which of the following cannot be the value of p ?

Correct option is D) 9

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Calculate (a) Implicit cost (b) Explicit cost and (c ) Econimic cost from the following: `{:(," Paticulars","(Rs. in Lakh)"),((i),"Payment of salaries

Correct Answer - Rs. 8600 Lakh (a) Explicit cost: (i)+(ii)=5000+2000=7000 (b) Implicit cost: (iii)+(v)+(vi)=1000+200+400=1600 (c ) Economic cost: (a) + (b)=7000+1600=86000

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An ion having a 4+ charge and a mass of 51.99 amu has two electrons with n=1,eight electrons with n=2,and ten electrons with n=3.Give the total number

Correct Answer - 24 In `M^(4+)` ion total number of electrons =20 Electronic configuration `=(1s^2)/2 (2s^2 2p^6)/8 (3s^2 3p^6 3d^2)/10` Number of electrons in metal = number of protons =4+20=24

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The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs 60. The cost of 2 kg onion, 4 kg wheat and 6 kg rice is Rs 90. The cost of 6 kg onion 2 kg whea

Let the cost of 1 kg wheat and 1 kg rice be ₹x, ₹ y and ₹ z respectively Given that , 4x+3y+2z=60 2x+4y+6z=90 6x+2y + 3z = 70 `rArr"...

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Two dice are thrown together and the total score is noted. The event E, F and G are a total 4, a total of 9 or more, and a total divisible by 5, respe

Two dices are thrown together i.e., sample spaces (S) =36`rArr`n(S)=36 E=A total of 4 = {(2,2),(3,1),(1,3)} `rArr n(E )=3` F= A total of 9 or more `={(3,6),(6,3),(4,5),(4,6),(5,4),(6,4),(5,5),(5,6),(6,5),(6,6)}` `rArr n(F)=10` G...

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A bag contains 10 different balls. Five balls are drawn simultaneously and then replaced and then seven balls are drawn. The probability that exactly

Number of ways of drawing 7 balls (second draw) = `.^(10)C_(7)` For each set of 7 balls of the second draw, 3 must be common to the set of 5...

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The total cost of six books, five pencils and seven sharpeners is Rs. 115 and that of eight books,

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