Question

ATEMPT ANY TWO
Question 1:
(a) The weight of a box is 4 kg 800gm. What is the total weight of 150 such boxes ?
(b) The mean of 18, 28, x, 32 14 and 36 Is 23. Find the value of
X.

Question 2:
(a) The number 650 is decreased to 500 in the ratio a:b: Find the ratio a:b
(b) Write each of the following set in Roster Form

1.Even Numbers between 1 and 20
2.First eight letters of the English alphabet.
3.Four cities of india whose names start with K.

Questio3:

(1) Find the L.C.M of 140 and 168. Use the L.C.M. Obtained to find the H.C.F of the given numbers

(2) In an examination, a student multiplied 40,327 by 46 instead of 64.By how
much was his answer greater than or less than the correct
answer.​

Answer 1

1a

Weight of a box = 4 kg + 800/1000 kg = 4 + 0.8 = 4.8 kg

Total weight of 150 such boxes = 150 × 4.8 = 720 kg

2a

650(a/b) = 500

a/b = 500/ 650 = 10/13

a:b = 10:13

2b

The set of integers between −4 and 4 in Roster Form is {−3,−2,−1,0,1,2,3}

You have mentioned to attempt any two so I have answered these 2

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