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Data Handling IV (Probability) Maths - Data Handling IV (Probability)

Jharkhand Board (JAC) - STD 7 - Maths (Jharkhand - English Medium). 12 questions in this chapter.

Question types

Data Handling IV (Probability) question types

12 questions across 2 question groups — pick any mix to generate a Maths paper with step-by-step answer keys.

12
Questions
2
Question groups
5
Question types
Sample Questions

Data Handling IV (Probability) questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q. [1 Marks Each]1 Mark
A bag contains $4$ green balls, $4$ red balls and $2$ blue balls. If a ball is drawn from the bag, the probability of getting neither green nor red ball is:
  • A
    $\frac{2}{5}$
  • B
    $\frac{1}{2}$
  • C
    $\frac{4}{5}$
  • ✓
    $\frac{1}{5}$

Answer: D.

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Q 2M.C.Q. [1 Marks Each]1 Mark
There are $10$ cards numbered from $1$ to $10.$ A card is drawn randomly. The probability of getting an even numbered card is:
  • A
    $\frac{1}{10}$
  • B
    $\frac{1}{5}$
  • ✓
    $\frac{1}{2}$
  • D
    $\frac{2}{5}$

Answer: C.

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Q 4M.C.Q. [1 Marks Each]1 Mark
A dice is tossed $80$ times and number $5$ is obtained $14$ times. The probability of not getting the number $5$ is:
  • A
    $\frac{7}{40}$
  • B
    $\frac{7}{80}$
  • ✓
    $\frac{33}{40}$
  • D
    None of thesee

Answer: C.

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Q 5M.C.Q. [1 Marks Each]1 Mark
There are $100$ cards numbered from $1$ to $100$ in a box. If a card is drawn from the box and the probability of an event is $\frac{1}{2},$ then the number of favourable cases to the event is:
  • A
    $20$
  • B
    $25$
  • C
    $40$
  • ✓
    $50$

Answer: D.

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Q 65 Marks Questions5 Marks
Two coins are tossed simultaneously $500$ times and the outcomes are noted as given below:
Outcome:
Two heads $(HH)$
One head $(HT$ or $TH)$
No head $(TT)$
Frequency:
$105$
$275$
$120$
If same pair of coins is tossed at random, find the probability of getting:
$i.$ Two heads
$ii.$ One head
$iii.$ No head
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Q 75 Marks Questions5 Marks
A die is thrown $100$ times and outcomes are noted as given below:
Outcome:
$1$
$2$
$3$
$4$
$5$
$6$
Frequency:
$21$
$9$
$14$
$23$
$18$
$15$
If a die is thrown at random, find the probability of getting $a/ an:$
$i. 3$
$ii. 5$
$iii. 4$
$iv.$ Even number
$v.$ Odd number
$vi.$ Number less than $3$
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