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Byju's Answer
Standard XII
Mathematics
Axiomatic Approach
The probabili...
Question

The probability of a household not having any television.

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A
3400
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B
7400
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C
13400
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D
19400
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Solution

The correct option is A 3400
From the table, the number of households having no television across all income ranges is 30.
So, P(X)=304000=3400

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Q. Observe the pattern and fill in the blanks.
2 × 200 = 400 2 × 300 = 600 2 × 400 = 800
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Q.

Evaluate using factors 4012×400−4003


Q. Question 16
A company selected 4000 households at random and surveyed them to find out a relationship between income level and the number of television sets in a home. The information, so obtained is listed in the following table.

Find the probability:
(i) Of a household earning Rs.10000 - Rs.14999 per year and having exactly one television.

(ii) Of a household earning Rs.25000 and more per year owning 2 televisions.

(iii) Of a household not having any television.


Q. Find the highest power of 7 in 400!?___
Q. The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city:
Expenditure
(in rupees ) (x)		Frequency
(f)		Expenditure
(in rupees) (xi)		Frequency
(fi)
100−15024300−35030
150−20040350−40022
200−25033400−45016
250−30028450−5007
Find the average expenditure (in rupees) per household.
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