Question

subject maths standard 7th
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Answer 1

Answer:

Step-by-step explanation:

1. 20*4/5= 80/5=16

2. 4/5*35= 4*7= 28

3.{-36/12}/3= -3/3= -1

4. 0.5

5. Mean= Sum of numbers/ no. of numbers

6. 0

2. B.(1). 0

2. 0.62

3. -10

4. 18

3. 1. 25*(-49)+(-49)*35= (-49)(35+25)= -49*70= 3430

(-997)*(-2)+(-997)*(-98)

-997(-98-2)

-997*(-100)=99700

3. Mean= 30+39+37+33+39+40+31+36+35+40/10= 36

4. As the middlemost observation is 20

Median= 20

As the observation 20 occurs maximum number of times

Mode= 20

5. 2+5/12 + 3+4/15

29/12+49/15

145+196/60

341/60