a) Ravi recorded the blood group of 25 of his classmates. The blood group of 16 of them
was 0+. We can represent this number using tally marks as____________.
b) area of figure is___________.
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a) Ravi recorded the blood group of 25 of his classmates. The blood group of 16 of them
was 0+. We can represent this number using tally marks as____________.
b) area of figure is___________.
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Given : Ravi recorded the blood group of 25 of his classmates.
The blood group of 16 of them was O+
To Find : represent this number using tally marks
Solution:
Tally marks are a unary numeral system.
These are also called hash marks,
These are in form of numeral used for counting.
a line is use to represent 1
two line for 2
three lines for 3
4 lines for 4
1 - |
2 - ||
3 - |||
4 - ||||
Making reading easier 5 is represented by crossing 4 lines
5 -
Then again same process followed
16 = 5 + 5 + 5 + 1
Hence 16 can be represented as
|
Tally Marks is :
|
Area of the figure is 15 x 10 - 5 x 5
= 150 - 25
= 125 cm²
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Answer:
roejrjtjdjrnnskakskfnjdjrkwksktjrkw q