The lane numbers are \(18,24,30,\ldots\) and \(S_{20}=1500\). Exam tip: treat a sequence with equal increase as an AP.
Step 2
Why this answer is correct
The correct answer is B. (1500). The lane numbers are \(18,24,30,\ldots\) and \(S_{20}=1500\). Exam tip: treat a sequence with equal increase as an AP.
Step 3
Exam Tip
गलियों की संख्या \(18,24,30,\ldots\) है और \(S_{20}=1500\)। परीक्षा में समान वृद्धि वाली श्रेणी को ए.पी. मानें।
The lane numbers are \(12,17,22,\ldots\) and \(S_{21}=1302\). Exam tip: treat a sequence with equal increase as an AP.
Step 2
Why this answer is correct
The correct answer is C. (1302). The lane numbers are \(12,17,22,\ldots\) and \(S_{21}=1302\). Exam tip: treat a sequence with equal increase as an AP.
Step 3
Exam Tip
गलियों की संख्या \(12,17,22,\ldots\) है और \(S_{21}=1302\)। परीक्षा में समान वृद्धि वाली श्रेणी को ए.पी. मानें।
The lane numbers are \(5,7,9,\ldots\) and \(S_{12}=192\). Exam tip: a sequence with a small constant increase is also an AP.
Step 2
Why this answer is correct
The correct answer is C. (192). The lane numbers are \(5,7,9,\ldots\) and \(S_{12}=192\). Exam tip: a sequence with a small constant increase is also an AP.
Step 3
Exam Tip
गलियों की संख्या \(5,7,9,\ldots\) है और \(S_{12}=192\)। परीक्षा में छोटी वृद्धि वाली श्रेणी भी ए.पी. होती है।
The lane numbers are \(2,3,4,\ldots\) and \(S_{14}=119\). Exam tip: a sequence with small constant increase is also an AP.
Step 2
Why this answer is correct
The correct answer is B. (119). The lane numbers are \(2,3,4,\ldots\) and \(S_{14}=119\). Exam tip: a sequence with small constant increase is also an AP.
Step 3
Exam Tip
गलियों की संख्या \(2,3,4,\ldots\) है और \(S_{14}=119\)। परीक्षा में छोटी वृद्धि वाली श्रेणी भी ए.पी. होती है।
A. सूक्ष्म जीव छोटे पौधे भाग को नष्ट कर सकते हैं/Microbes can destroy the small plant part
Step 1
Concept
In tissue culture, a small plant part is grown on a nutrient medium.
Step 2
Why this answer is correct
Microbes can grow quickly in that medium.
Step 3
Exam Tip
Clean conditions are needed so the plant part grows safely. चरण 1: ऊतक संवर्धन में पौधे का छोटा भाग पोषक माध्यम पर उगाया जाता है। चरण 2: सूक्ष्म जीव उस माध्यम में तेजी से बढ़ सकते हैं। चरण 3: इसलिए स्वच्छ दशा आवश्यक है ताकि पौधा भाग सुरक्षित बढ़े।
White can suggest cleanliness and light. Exam tip: connect white also with light value.
Step 2
Why this answer is correct
The correct answer is D. स्वच्छता और प्रकाश / Cleanliness and light. White can suggest cleanliness and light. Exam tip: connect white also with light value.
Step 3
Exam Tip
सफेद रंग स्वच्छता और प्रकाश का संकेत दे सकता है। परीक्षा में सफेद को हल्का मान से भी जोड़ें।