Question

Q1) Three different numbers add up to 50.
?
?
? = 50
●The numbers are all even.
●Each number is greater than 10.
●What could the numbers be?


Q2)Erik has a set of number cards from 1 to 20.

●He picks four different cards.

●Exactly three of his cards are multiples of 5.
●Exactly three of his cards are even numbers.
●All four of the numbers add up to less than 40.

What cards could Erik pick?


Q3) Which number satisfies all of these conditions:

it is a multiple of 25
it is even
it is greater than 550 but less than 700
it is not 600.​

Answer 1

Answer:

Ans 1

The no.s are

30,12 and 8

30+12+8 = 50

ANS 2

Erik could pick cards

20,10,5 and 2

According to 1st condition

3 of his cards are multiples of 5 :- 5,10 and 20

According to 2nd condition

3 of his cards are even :- 10,20and 2

According to 3rd condition

All 4 of the no.s add up to less than 40

20+10+5+2 = 37

ANS 3

The no is 650

It is a multiple of 25

650÷25 = 26

it is even also

it is greater than 550 but less than 700

it is not 600

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