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Out of 17 bul...

Question

Out of 17 bulbs, there 8 fused bulbs. The number of bulbs working is 17 - 8. The addition equation for this is:

A

9 + 8 = 17

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B

9 + 7 = 16

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C

8 + 7 = 15

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D

9 + 9 = 18

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Solution

The correct option is A $9 + 8 = 17$

$17 - 8 = 9$
$9 + 8 = 17$

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Q. A company produces 12 defective bulbs out of 1,000 bulbs. In the warehouse, bulbs are packaged in groups, each having identical numbers of bulbs. Find the maximum bulbs in each group such that no defective bulb is packaged with working bulbs, given that there is only one lot of manufactured bulbs.

Q. Question 17 (i)
(i) A lot of 20 bulbs contains 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective?

A

B

, of the three bulbs, each, are glowing in two separate rooms. When one of the bulbs in set

A

is fused, the other two bulbs also cease to glow. But in set

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, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs

(i) Two sets A and B, of three bulbs each, are glowing in two separate rooms. When one of the bulbs in set A is fused, the other two bulbs also cease to glow. But in set B, when one bulb fuses, the other two bulbs continue to glow. explain why this phenomenon occurs.

(ii) Why do we prefer arrangements of Set B for house circuiting?

Q. In the given figure, a fuse in one of the bulbs causes all the others to go out. Which bulb has fused ?

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