1. Which is the digit at the tenths place in 18.473 ? 2. \( 87 \mathrm{~m}=\ldots \mathrm{km} \) (Express in decimal form) 3. \( 0.078 \times 1000=\ldots \). (Fill in the blanks).

Q.49. \( 25 \% \) और \( 10 \% \) की दो क्रमिक छूटों के समतुल्य एकल छूट ज्ञात कीजिए। \( \begin{array}{llll}\text { (a) } 31.9 \% & \text { (b) } 35.5 \% & \text { (c) } 32.5 \% & \text { (d) } 38.4 \%\end{array} \)

If \( 3^2 \) is calculated, what is the result?

42. \( 144 \times 2+130 \times 5-10 \times 2 \) का मान तना है?

Event A happens every 15 minutes and event \( B \) happens every 18 minutes, If int A and event \( B \) happened together at 6.00 PM, when is the next time that they if happen together?

1. Find the value of: (i) \( 2^{6} \)