No, he is not correct because of the total of 6 triangles 4 are blue.
ie \(\frac { 4 }{ 6 } \)^th triangles are blue.

Let x^o be an angle
Given,
Two complementary angles are in ratio \(7: 2=\frac{7}{2}\)
It is equivalent to \(\frac{7 \times x}{2 \times x}=\frac{7 x}{2 x}\)
7x and 2x are two complementary angles
\(\therefore\) 7x + 2x = 90^o
9x^o = 90^o 
x^o = 10
\(\therefore\) 7x^o = 70 and 2x^o = 20 
Two angles are 70˚ and 20˚

Let x^o be an angle.
90 - x^o is a complement of x^o
Given, \(x^{\circ} =2 \times\left(90-x^{\circ}\right) \)
\(=180^{\circ}-2 x^{\circ} \)
\(\Rightarrow x^{\circ}+2 x^{\circ} =180^{\circ} \)
\(\Rightarrow 3 x^{\circ} =180^{\circ} \)
\(x^{\circ} =\frac{180^{\circ}}{3}=60^{\circ} \)

supplementary angle of 35º = 180º - 35º = 145º

Complementary angle of 85º = 90º - 85º = 5º

right angle

The pictograph for the mode of transport of students

6 possibilities,
i) R - B - R - B  
ii) R - R - B - B 
iii) B - R - R - B 
iv) B - R - B - R  
v) B - B - R - R  
vi) R - B - B - R
(R- RED, B- BLUE)

One is Multiplicative Identity

Commutativity for Addition

To round off 44555 to thousands
The digit in the thousands place is 4
digit to the right is 5 = 5.
\(\therefore\)  Adding 1 to the place value digit 4
4 + 1 = 5
Changing the digits to the right of 45 to zeros we get 45000
44555 \(\simeq \) 45,000

The Tally marks table is given below.

(i) Obtuse angle
(ii) Zero angle
(iii) Straight angle
(iv) Acute angle
(v) Right angle

(i)

(ii)

(iii)

(v)

(10 + 17) ÷ 3 (Given)
= 27 \(\div\) 3 (Bracket completed first)
= 9 (\(\div\) completed)

1:6
Equivalent Ratios of 1: 6 are
\(\frac{1}{6}\times\frac{2}{2}=\frac{2}{12}=2:12\)
\(\frac{1}{6}\times\frac{3}{3}=\frac{3}{18}=3:18\)
2 : 12 and 3 : 18 are equivalent to 1 : 6

8 - y

t + 100

Step 1: Write the ratio in fraction form as\(20\over 5\).
Step 2: Divide each quantity by 5. That is, \({20\div 5\over 5\div 5}={4\over1}=4:1\)
This is the ratio in the simplest form.

567,456,345
Place value of 7 is 7 \(\times\) 1,000,000
= 7,000,000
= Seven Million.

We know that the place value increases from right to left
[ \(\therefore\) Arranging the digits in ascending order from right to left we get the largest number]
Largest number is 75320
Smallest number is  20357
[ \(\therefore\) Reverse order of 75320 is 02357. It becomes four digit number 2357]

There are 10 \(\overline { PQ },\overline {PA},\overline {PB},\overline {PC},\overline {AB},\overline {BC},\overline {CQ},\overline {AQ},\overline {BQ},\overline {AC}\)

32 : 24
Fraction = \(\frac { 32 }{ 24 } =\frac { 32\div 8 }{ 24\div 8 } =\frac { 4 }{ 3 } \)
Simplest form = 4 : 3 

Lakh, Ten Thousands, Thousands, Hundred, ones