subject maths standard 7th
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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
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