Dorothy Tan
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Statistics

Need help on this please..

Replies 6
Raymond Ng

6 years ago
Yueh Mei Liu

6 years ago
Caleb Tey

6 years ago
Xavier Sng

(88 - 71) × 4 / (88 - 86) = 34

6 years ago
Dorothy Tan

Thanks everyone 😘

6 years ago
Thamarai Kannan

G and check

6 years ago

Jason Khng
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Help

Replies 3
Xavier Sng

6 years ago
Xavier Sng

6 years ago
Xavier Sng

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Making it visual...

Replies 1
Sabri Mahmod

Thank you so much

6 years ago

Sabri Mahmod
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

How do you solve this...thanks

Replies 2
Pauline Vong Nyit Li

I'm sure there are other ways to solve this qns but my girl is taught this way. Hope it's correct and u can understand it !

6 years ago
Xavier Sng

6 years ago

Vicky OKyee
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

May I know how to solve this P5 question??

Replies 12
Zhong Shu Hao

This line tells us that only people whose position is 2 more then a multiple of 3 will call out the number 2. Since there are just nicely 300 people in the role, if the people are asked to shout "1,2,3,1,2,3,...." from the right instead, the people calling out the number "2" will be the same people.

6 years ago
Zhong Shu Hao

This line tells us that only people who are in a position that is 2 more than a multiple of 4 will shout the number "2".

6 years ago
Yu Yu

26?

6 years ago
Zhong Shu Hao

Hence, rephrasing the question, how many numbers from 0 to 300, is 2 more than a common multiple of 3 and 4?

6 years ago
Yeo See Yeong

Hope it's correct.

6 years ago
Zhong Shu Hao

Hence..... LCM of 3 and 4 = 12 Number of multiples of 12 from 0 to 300 = 300 / 12 = 25 (NOTE: 300 is the 25th multiple) Hence, number of people who call out "2" twice = 1 + 25 - 1 = 25.

6 years ago
Vicky OKyee

Ans is 25

6 years ago
Zhong Shu Hao

The second line tells us that only people whose position is 2 more then a multiple of 3 will call out the number 2. Since there are just nicely 300 people in the role, if the people are asked to shout "1,2,3,1,2,3,...." from the right instead, the people calling out the number "2" will be the same people. The third line tells us that only people who are in a position that is 2 more than a multiple of 4 will shout the number "2". Hence, rephrasing the question, how many numbers from 0 to 300, is 2 more than a common multiple of 3 and 4? Hence..... LCM of 3 and 4 = 12 Number of multiples of 12 from 0 to 300 = 300 / 12 = 25 (NOTE: 300 is the 25th multiple) Hence, number of people who call out "2" twice = 1 + 25 - 1 = 25.

6 years ago
Zhong Shu Hao

Compiled my comments into 1 comment.....

6 years ago
Yu Yu

😂

6 years ago
Vicky OKyee

Tqs everyone "拔刀相助”

6 years ago
Xavier Sng

6 years ago

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