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In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them?
- a)990
- b)890
- c)2970
- d)1980
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
In a colony, there are 55 members. Every member posts a greeting card ...
Problem:
In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them?
Solution:
To find the total number of greeting cards posted by all the members, we need to multiply the number of members by the number of greeting cards each member posts.
Number of members = 55
Number of greeting cards each member posts = 55
Total number of greeting cards posted = Number of members × Number of greeting cards each member posts
Total number of greeting cards posted = 55 × 55 = 3025
Therefore, the total number of greeting cards posted by all the members is 3025.
Answer: Option (c) 2970.
In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them?
Solution:
To find the total number of greeting cards posted by all the members, we need to multiply the number of members by the number of greeting cards each member posts.
Number of members = 55
Number of greeting cards each member posts = 55
Total number of greeting cards posted = Number of members × Number of greeting cards each member posts
Total number of greeting cards posted = 55 × 55 = 3025
Therefore, the total number of greeting cards posted by all the members is 3025.
Answer: Option (c) 2970.
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In a colony, there are 55 members. Every member posts a greeting card ...
First player can post greeting cards to the remaining 54 players in 54 ways. Second player can post greeting card to the 54 players. Similarly, it happens with the rest of the players. The total numbers of greeting cards posted are
54 + 54 + 54 …
54 (55times) = 54 x 55 = 2970.
54 + 54 + 54 …
54 (55times) = 54 x 55 = 2970.
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In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them?a)990b)890c)2970d)1980Correct answer is option 'C'. Can you explain this answer?
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