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Here are 20 multiple choice questions (serial no. 161 to 180) with answers for AP DDSC Secondary Grade Teacher SGT 2025 aspirants based on the given Mathematics syllabus:

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161. What is the place value of 7 in the number 3,479?
a) 7
b) 70
c) 700
d) 7,000
Answer: c) 700

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162. Which of the following numbers is a prime number?
a) 15
b) 29
c) 35
d) 39
Answer: b) 29

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163. What is the HCF (Highest Common Factor) of 24 and 36?
a) 6
b) 12
c) 18
d) 24
Answer: b) 12

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164. Which of the following is an irrational number?
a) 0.75
b) √2
c) 3/4
d) 0.5
Answer: b) √2

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165. According to BODMAS rule, what is the value of 8 + 2 × 5?
a) 50
b) 18
c) 30
d) 20
Answer: b) 18

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166. The ratio of boys to girls in a class is 3:4. If there are 21 boys, how many girls are there?
a) 24
b) 28
c) 35
d) 30
Answer: b) 28

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167. A shopkeeper sells an article for ₹500 with a profit of 20%. What is the cost price?
a) ₹400
b) ₹420
c) ₹480
d) ₹520
Answer: a) ₹400

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168. Which type of triangle has all sides equal?
a) Scalene
b) Isosceles
c) Equilateral
d) Right-angled
Answer: c) Equilateral

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169. The sum of the interior angles of a triangle is:
a) 90°
b) 180°
c) 270°
d) 360°
Answer: b) 180°

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170. The number of edges in a cuboid is:
a) 6
b) 8
c) 12
d) 16
Answer: c) 12

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171. If the median of ungrouped data is 25, then what does it represent?
a) Most frequent value
b) Average value
c) Middle value when data is arranged
d) Smallest value
Answer: c) Middle value when data is arranged

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172. What is the probability of getting a head when tossing a fair coin?
a) 0
b) 0.5
c) 1
d) 2
Answer: b) 0.5

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173. Which of the following is a property of rational numbers?
a) Closure under addition
b) Closure under division by zero
c) Cannot be represented on number line
d) None of these
Answer: a) Closure under addition

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174. What is the value of 3³?
a) 6
b) 9
c) 27
d) 81
Answer: c) 27

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175. If a polygon has 5 sides, what is it called?
a) Triangle
b) Quadrilateral
c) Pentagon
d) Hexagon
Answer: c) Pentagon

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176. What is the sum of all interior angles of a quadrilateral?
a) 180°
b) 270°
c) 360°
d) 540°
Answer: c) 360°

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177. The decimal equivalent of 3/4 is:
a) 0.25
b) 0.5
c) 0.75
d) 0.85
Answer: c) 0.75

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178. What is the face value of 6 in the number 569?
a) 6
b) 60
c) 600
d) 6000
Answer: a) 6

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179. Which of the following shapes has rotational symmetry?
a) Square
b) Rectangle
c) Scalene triangle
d) Trapezium
Answer: a) Square

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180. What is the volume of a cube with side length 4 cm?
a) 64 cm³
b) 48 cm³
c) 16 cm³
d) 32 cm³
Answer: a) 64 cm³

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