Question

class 11th
Write the set of all natural numbers x such that 4x +9 < 50 in roster form.
solve step wise please answer quickly.​its urgent ​

Answer 1

AnswEr :

Given that,

S = {x : x € N , 4x + 9 < 50 }

We have to express the above set in Roster Form

Given condition,

4x + 9 < 50

➠ 4x < 50 - 9

➠ 4x < 41

➠ x < 41/4

➠ x < 10.2

'x' is any natural number lesser than 10

The above set in Roster Form would be :

S = {1,2,3,4,5,6,7,8,9,10}

SET THEORY

• Sets are defined as a collection of well defined objects

For example,

• Set of all the cricket players who won the 1983 Word Cup is well defined and conditioned while the Set of all talented players is not well defined and trivial

Sets can be represented into forms :

• Roster Form

• Set Builder Form

Answer 2

Answer:

4x+9<50

4x<50-9

4x<41

x<41/4

x<10.25

: x is natural number less than 10

x=[1,2,3,4,5,6,7,8,9,10]