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Ratio class - 7(Proportion - 1)
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Proportions basic part - 1

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. More than 20000 students selected.

U
Unacademy user
how ( 12 - √32 ) becoms ( 12 - 4√2 )
Hk
Himanshu kolte
5 months ago
sahi baat hai ye kaise ho skta hai
Astha gupta
3 months ago
first of all u have written everything wrong it's (12-√32) n by taking common it becomes 4(3-√2)
Snehal Mishra
7 days ago
Rewrite 32 as its prime factors. √2×2×2×2×2= Group the same factors into pairs. √(2×2)×(2×2)×2= Rewrite into exponent form. √(22)×(22)×2= √22=2 (2×2)×√2= 4√2
I can't understand this chapter video lecture I m very dissatisfied
B/C=(2/4)power 3 =8/64= 1/8, according to me answer is B3:C3 plz clarify sir.
sir , progression and proportion same kese maan liya aapne 7,21,45 wale qn mai ?? video time 5:45
  1. RATIO AND PROPORTION Class 7 Proportion part-1)


  2. Proportion If two ratio are equal, it is known as proportion Ca


  3. Proportion If two ratio are equal, it is known as proportion Ca uaw


  4. Calculating missing term of proportion Fourth proportion Find fourth proportion of 2, 5, 3 2,S, 3, :S3 7L


  5. Calculating missing term of proportion First proportion Find first proportion of 3, 6, 10


  6. Calculating missing term of proportion Third proportion Find third proportion of 2 and 5 ru


  7. Calculating missing term of proportion Mean proportion Find Mean proportion of 3 and 12 2, 12 3, x, 12.


  8. The first, second and fourth terms of a progression are 7, 21 and 45 respectively. Find the third term.


  9. The first, second and fourth terms of a progression are 7, 21 and 45 respectively. Find the third term. 21. YS


  10. lfx : y 3 : 1, then xa_y x3ty3 will be equal to which of the following? a, 13:14 b. 14 13 C. 10:11 d. 11:10